Improve queue & process & stacktrace (#24636)

Although some features are mixed together in this PR, this PR is not
that large, and these features are all related.

Actually there are more than 70 lines are for a toy "test queue", so
this PR is quite simple.

Major features:

1. Allow site admin to clear a queue (remove all items in a queue)
* Because there is no transaction, the "unique queue" could be corrupted
in rare cases, that's unfixable.
* eg: the item is in the "set" but not in the "list", so the item would
never be able to be pushed into the queue.
* Now site admin could simply clear the queue, then everything becomes
correct, the lost items could be re-pushed into queue by future
operations.
3. Split the "admin/monitor" to separate pages
4. Allow to download diagnosis report
* In history, there were many users reporting that Gitea queue gets
stuck, or Gitea's CPU is 100%
    * With diagnosis report, maintainers could know what happens clearly

The diagnosis report sample:
[gitea-diagnosis-20230510-192913.zip](https://github.com/go-gitea/gitea/files/11441346/gitea-diagnosis-20230510-192913.zip)
, use "go tool pprof profile.dat" to view the report.


Screenshots:


![image](https://github.com/go-gitea/gitea/assets/2114189/320659b4-2eda-4def-8dc0-5ea08d578063)


![image](https://github.com/go-gitea/gitea/assets/2114189/c5c46fae-9dc0-44ca-8cd3-57beedc5035e)


![image](https://github.com/go-gitea/gitea/assets/2114189/6168a811-42a1-4e64-a263-0617a6c8c4fe)

---------

Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: Giteabot <teabot@gitea.io>

options/locale/locale_en-US.ini

@@ -3040,8 +3040,9 @@ monitor.next = Next Time
 monitor.previous = Previous Time
 monitor.execute_times = Executions
 monitor.process = Running Processes
-monitor.stacktrace = Stacktraces
-monitor.goroutines = %d Goroutines
+monitor.stacktrace = Stacktrace
+monitor.processes_count = %d Processes
+monitor.download_diagnosis_report = Download diagnosis report
 monitor.desc = Description
 monitor.start = Start Time
 monitor.execute_time = Execution Time
@@ -3050,6 +3051,7 @@ monitor.process.cancel = Cancel process
 monitor.process.cancel_desc =  Cancelling a process may cause data loss
 monitor.process.cancel_notices =  Cancel: <strong>%s</strong>?
 monitor.process.children = Children
+
 monitor.queues = Queues
 monitor.queue = Queue: %s
 monitor.queue.name = Name
@@ -3060,56 +3062,15 @@ monitor.queue.maxnumberworkers = Max Number of Workers
 monitor.queue.numberinqueue = Number in Queue
 monitor.queue.review = Review Config
 monitor.queue.review_add = Review/Add Workers
-monitor.queue.configuration = Initial Configuration
-monitor.queue.nopool.title = No Worker Pool
-monitor.queue.nopool.desc = This queue wraps other queues and does not itself have a worker pool.
-monitor.queue.wrapped.desc = A wrapped queue wraps a slow starting queue, buffering queued requests in a channel. It does not have a worker pool itself.
-monitor.queue.persistable-channel.desc = A persistable-channel wraps two queues, a channel queue that has its own worker pool and a level queue for persisted requests from previous shutdowns. It does not have a worker pool itself.
-monitor.queue.flush = Flush worker
-monitor.queue.pool.timeout = Timeout
-monitor.queue.pool.addworkers.title = Add Workers
-monitor.queue.pool.addworkers.submit = Add Workers
-monitor.queue.pool.addworkers.desc = Add Workers to this pool with or without a timeout. If you set a timeout these workers will be removed from the pool after the timeout has lapsed.
-monitor.queue.pool.addworkers.numberworkers.placeholder = Number of Workers
-monitor.queue.pool.addworkers.timeout.placeholder = Set to 0 for no timeout
-monitor.queue.pool.addworkers.mustnumbergreaterzero = Number of Workers to add must be greater than zero
-monitor.queue.pool.addworkers.musttimeoutduration = Timeout must be a golang duration eg. 5m or be 0
-monitor.queue.pool.flush.title = Flush Queue
-monitor.queue.pool.flush.desc = Flush will add a worker that will terminate once the queue is empty, or it times out.
-monitor.queue.pool.flush.submit = Add Flush Worker
-monitor.queue.pool.flush.added = Flush Worker added for %[1]s
-monitor.queue.pool.pause.title = Pause Queue
-monitor.queue.pool.pause.desc = Pausing a Queue will prevent it from processing data
-monitor.queue.pool.pause.submit = Pause Queue
-monitor.queue.pool.resume.title = Resume Queue
-monitor.queue.pool.resume.desc = Set this queue to resume work
-monitor.queue.pool.resume.submit = Resume Queue
-
 monitor.queue.settings.title = Pool Settings
-monitor.queue.settings.desc = Pools dynamically grow with a boost in response to their worker queue blocking. These changes will not affect current worker groups.
-monitor.queue.settings.timeout = Boost Timeout
-monitor.queue.settings.timeout.placeholder = Currently %[1]v
-monitor.queue.settings.timeout.error = Timeout must be a golang duration eg. 5m or be 0
-monitor.queue.settings.numberworkers = Boost Number of Workers
-monitor.queue.settings.numberworkers.placeholder = Currently %[1]d
-monitor.queue.settings.numberworkers.error = Number of Workers to add must be greater than or equal to zero
+monitor.queue.settings.desc = Pools dynamically grow in response to their worker queue blocking.
 monitor.queue.settings.maxnumberworkers = Max Number of workers
 monitor.queue.settings.maxnumberworkers.placeholder = Currently %[1]d
 monitor.queue.settings.maxnumberworkers.error = Max number of workers must be a number
 monitor.queue.settings.submit = Update Settings
 monitor.queue.settings.changed = Settings Updated
-monitor.queue.settings.blocktimeout = Current Block Timeout
-monitor.queue.settings.blocktimeout.value = %[1]v
-
-monitor.queue.pool.none = This queue does not have a Pool
-monitor.queue.pool.added = Worker Group Added
-monitor.queue.pool.max_changed = Maximum number of workers changed
-monitor.queue.pool.workers.title = Active Worker Groups
-monitor.queue.pool.workers.none = No worker groups.
-monitor.queue.pool.cancel = Shutdown Worker Group
-monitor.queue.pool.cancelling = Worker Group shutting down
-monitor.queue.pool.cancel_notices = Shutdown this group of %s workers?
-monitor.queue.pool.cancel_desc = Leaving a queue without any worker groups may cause requests to block indefinitely.
+monitor.queue.settings.remove_all_items = Remove all
+monitor.queue.settings.remove_all_items_done = All items in the queue have been removed.
 
 notices.system_notice_list = System Notices
 notices.view_detail_header = View Notice Details