Move macaron to chi (#14293)

Use [chi](https://github.com/go-chi/chi) instead of the forked [macaron](https://gitea.com/macaron/macaron). Since macaron and chi have conflicts with session share, this big PR becomes a have-to thing. According my previous idea, we can replace macaron step by step but I'm wrong. :( Below is a list of big changes on this PR.

- [x] Define `context.ResponseWriter` interface with an implementation `context.Response`.
- [x] Use chi instead of macaron, and also a customize `Route` to wrap chi so that the router usage is similar as before.
- [x] Create different routers for `web`, `api`, `internal` and `install` so that the codes will be more clear and no magic .
- [x] Use https://github.com/unrolled/render instead of macaron's internal render
- [x] Use https://github.com/NYTimes/gziphandler instead of https://gitea.com/macaron/gzip
- [x] Use https://gitea.com/go-chi/session which is a modified version of https://gitea.com/macaron/session and removed `nodb` support since it will not be maintained. **BREAK**
- [x] Use https://gitea.com/go-chi/captcha which is a modified version of https://gitea.com/macaron/captcha
- [x] Use https://gitea.com/go-chi/cache which is a modified version of https://gitea.com/macaron/cache
- [x] Use https://gitea.com/go-chi/binding which is a modified version of https://gitea.com/macaron/binding
- [x] Use https://github.com/go-chi/cors instead of https://gitea.com/macaron/cors
- [x] Dropped https://gitea.com/macaron/i18n and make a new one in `code.gitea.io/gitea/modules/translation`
- [x] Move validation form structs from `code.gitea.io/gitea/modules/auth` to `code.gitea.io/gitea/modules/forms` to avoid dependency cycle.
- [x] Removed macaron log service because it's not need any more. **BREAK**
- [x] All form structs have to be get by `web.GetForm(ctx)` in the route function but not as a function parameter on routes definition.
- [x] Move Git HTTP protocol implementation to use routers directly.
- [x] Fix the problem that chi routes don't support trailing slash but macaron did.
- [x] `/api/v1/swagger` now will be redirect to `/api/swagger` but not render directly so that `APIContext` will not create a html render. 

Notices:
- Chi router don't support request with trailing slash
- Integration test `TestUserHeatmap` maybe mysql version related. It's failed on my macOS(mysql 5.7.29 installed via brew) but succeed on CI.

Co-authored-by: 6543 <6543@obermui.de>

routers/repo/editor.go

@@ -12,10 +12,10 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/charset"
 	"code.gitea.io/gitea/modules/context"
+	auth "code.gitea.io/gitea/modules/forms"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/repofiles"
@@ -23,6 +23,7 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/upload"
 	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/utils"
 )
 
@@ -325,17 +326,20 @@ func editFilePost(ctx *context.Context, form auth.EditRepoFileForm, isNewFile bo
 }
 
 // EditFilePost response for editing file
-func EditFilePost(ctx *context.Context, form auth.EditRepoFileForm) {
-	editFilePost(ctx, form, false)
+func EditFilePost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.EditRepoFileForm)
+	editFilePost(ctx, *form, false)
 }
 
 // NewFilePost response for creating file
-func NewFilePost(ctx *context.Context, form auth.EditRepoFileForm) {
-	editFilePost(ctx, form, true)
+func NewFilePost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.EditRepoFileForm)
+	editFilePost(ctx, *form, true)
 }
 
 // DiffPreviewPost render preview diff page
-func DiffPreviewPost(ctx *context.Context, form auth.EditPreviewDiffForm) {
+func DiffPreviewPost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.EditPreviewDiffForm)
 	treePath := cleanUploadFileName(ctx.Repo.TreePath)
 	if len(treePath) == 0 {
 		ctx.Error(500, "file name to diff is invalid")
@@ -394,7 +398,8 @@ func DeleteFile(ctx *context.Context) {
 }
 
 // DeleteFilePost response for deleting file
-func DeleteFilePost(ctx *context.Context, form auth.DeleteRepoFileForm) {
+func DeleteFilePost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.DeleteRepoFileForm)
 	canCommit := renderCommitRights(ctx)
 	branchName := ctx.Repo.BranchName
 	if form.CommitChoice == frmCommitChoiceNewBranch {
@@ -556,7 +561,8 @@ func UploadFile(ctx *context.Context) {
 }
 
 // UploadFilePost response for uploading file
-func UploadFilePost(ctx *context.Context, form auth.UploadRepoFileForm) {
+func UploadFilePost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.UploadRepoFileForm)
 	ctx.Data["PageIsUpload"] = true
 	ctx.Data["RequireTribute"] = true
 	ctx.Data["RequireSimpleMDE"] = true
@@ -760,7 +766,8 @@ func UploadFileToServer(ctx *context.Context) {
 }
 
 // RemoveUploadFileFromServer remove file from server file dir
-func RemoveUploadFileFromServer(ctx *context.Context, form auth.RemoveUploadFileForm) {
+func RemoveUploadFileFromServer(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.RemoveUploadFileForm)
 	if len(form.File) == 0 {
 		ctx.Status(204)
 		return