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/api/v1/repo/issue_label.go

@@ -12,6 +12,7 @@ import (
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/convert"
 	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/web"
 	issue_service "code.gitea.io/gitea/services/issue"
 )
 
@@ -64,7 +65,7 @@ func ListIssueLabels(ctx *context.APIContext) {
 }
 
 // AddIssueLabels add labels for an issue
-func AddIssueLabels(ctx *context.APIContext, form api.IssueLabelsOption) {
+func AddIssueLabels(ctx *context.APIContext) {
 	// swagger:operation POST /repos/{owner}/{repo}/issues/{index}/labels issue issueAddLabel
 	// ---
 	// summary: Add a label to an issue
@@ -99,7 +100,8 @@ func AddIssueLabels(ctx *context.APIContext, form api.IssueLabelsOption) {
 	//   "403":
 	//     "$ref": "#/responses/forbidden"
 
-	issue, labels, err := prepareForReplaceOrAdd(ctx, form)
+	form := web.GetForm(ctx).(*api.IssueLabelsOption)
+	issue, labels, err := prepareForReplaceOrAdd(ctx, *form)
 	if err != nil {
 		return
 	}
@@ -190,7 +192,7 @@ func DeleteIssueLabel(ctx *context.APIContext) {
 }
 
 // ReplaceIssueLabels replace labels for an issue
-func ReplaceIssueLabels(ctx *context.APIContext, form api.IssueLabelsOption) {
+func ReplaceIssueLabels(ctx *context.APIContext) {
 	// swagger:operation PUT /repos/{owner}/{repo}/issues/{index}/labels issue issueReplaceLabels
 	// ---
 	// summary: Replace an issue's labels
@@ -224,8 +226,8 @@ func ReplaceIssueLabels(ctx *context.APIContext, form api.IssueLabelsOption) {
 	//     "$ref": "#/responses/LabelList"
 	//   "403":
 	//     "$ref": "#/responses/forbidden"
-
-	issue, labels, err := prepareForReplaceOrAdd(ctx, form)
+	form := web.GetForm(ctx).(*api.IssueLabelsOption)
+	issue, labels, err := prepareForReplaceOrAdd(ctx, *form)
 	if err != nil {
 		return
 	}