Add show timestamp/seconds and fullscreen options to action page (#24876)

Part of #24728

- The timestamp shows local time and is parsed by `date.toLocaleString`;
- "show seconds" and "show timestamps" are mutually exclusive, and they
can be both hidden.


https://github.com/go-gitea/gitea/assets/17645053/89531e54-37b7-4400-a6a0-bb3cc69eb6f5

Update for timestamp format:

<img width="306" alt="Screen Shot 2023-05-25 at 09 07 47"
src="https://github.com/go-gitea/gitea/assets/17645053/2d99768d-d39c-4c9e-81a2-7bc7470399dd">

---------

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

options/locale/locale_en-US.ini

@@ -125,6 +125,10 @@ concept_user_individual = Individual
 concept_code_repository = Repository
 concept_user_organization = Organization
 
+show_timestamps = Show timestamps
+show_log_seconds = Show seconds
+show_full_screen = Show full screen
+
 [aria]
 navbar = Navigation Bar
 footer = Footer