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/pull_review.go

@@ -14,6 +14,7 @@ import (
 	"code.gitea.io/gitea/modules/convert"
 	"code.gitea.io/gitea/modules/git"
 	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/api/v1/utils"
 	issue_service "code.gitea.io/gitea/services/issue"
 	pull_service "code.gitea.io/gitea/services/pull"
@@ -258,7 +259,7 @@ func DeletePullReview(ctx *context.APIContext) {
 }
 
 // CreatePullReview create a review to an pull request
-func CreatePullReview(ctx *context.APIContext, opts api.CreatePullReviewOptions) {
+func CreatePullReview(ctx *context.APIContext) {
 	// swagger:operation POST /repos/{owner}/{repo}/pulls/{index}/reviews repository repoCreatePullReview
 	// ---
 	// summary: Create a review to an pull request
@@ -294,6 +295,7 @@ func CreatePullReview(ctx *context.APIContext, opts api.CreatePullReviewOptions)
 	//   "422":
 	//     "$ref": "#/responses/validationError"
 
+	opts := web.GetForm(ctx).(*api.CreatePullReviewOptions)
 	pr, err := models.GetPullRequestByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
 	if err != nil {
 		if models.IsErrPullRequestNotExist(err) {
@@ -373,7 +375,7 @@ func CreatePullReview(ctx *context.APIContext, opts api.CreatePullReviewOptions)
 }
 
 // SubmitPullReview submit a pending review to an pull request
-func SubmitPullReview(ctx *context.APIContext, opts api.SubmitPullReviewOptions) {
+func SubmitPullReview(ctx *context.APIContext) {
 	// swagger:operation POST /repos/{owner}/{repo}/pulls/{index}/reviews/{id} repository repoSubmitPullReview
 	// ---
 	// summary: Submit a pending review to an pull request
@@ -415,6 +417,7 @@ func SubmitPullReview(ctx *context.APIContext, opts api.SubmitPullReviewOptions)
 	//   "422":
 	//     "$ref": "#/responses/validationError"
 
+	opts := web.GetForm(ctx).(*api.SubmitPullReviewOptions)
 	review, pr, isWrong := prepareSingleReview(ctx)
 	if isWrong {
 		return
@@ -542,7 +545,7 @@ func prepareSingleReview(ctx *context.APIContext) (*models.Review, *models.PullR
 }
 
 // CreateReviewRequests create review requests to an pull request
-func CreateReviewRequests(ctx *context.APIContext, opts api.PullReviewRequestOptions) {
+func CreateReviewRequests(ctx *context.APIContext) {
 	// swagger:operation POST /repos/{owner}/{repo}/pulls/{index}/requested_reviewers repository repoCreatePullReviewRequests
 	// ---
 	// summary: create review requests for a pull request
@@ -577,11 +580,13 @@ func CreateReviewRequests(ctx *context.APIContext, opts api.PullReviewRequestOpt
 	//     "$ref": "#/responses/validationError"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
-	apiReviewRequest(ctx, opts, true)
+
+	opts := web.GetForm(ctx).(*api.PullReviewRequestOptions)
+	apiReviewRequest(ctx, *opts, true)
 }
 
 // DeleteReviewRequests delete review requests to an pull request
-func DeleteReviewRequests(ctx *context.APIContext, opts api.PullReviewRequestOptions) {
+func DeleteReviewRequests(ctx *context.APIContext) {
 	// swagger:operation DELETE /repos/{owner}/{repo}/pulls/{index}/requested_reviewers repository repoDeletePullReviewRequests
 	// ---
 	// summary: cancel review requests for a pull request
@@ -616,7 +621,8 @@ func DeleteReviewRequests(ctx *context.APIContext, opts api.PullReviewRequestOpt
 	//     "$ref": "#/responses/validationError"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
-	apiReviewRequest(ctx, opts, false)
+	opts := web.GetForm(ctx).(*api.PullReviewRequestOptions)
+	apiReviewRequest(ctx, *opts, false)
 }
 
 func apiReviewRequest(ctx *context.APIContext, opts api.PullReviewRequestOptions, isAdd bool) {