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>

modules/lfs/server.go

@@ -22,7 +22,6 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/storage"
 
-	"gitea.com/macaron/macaron"
 	"github.com/dgrijalva/jwt-go"
 )
 
@@ -413,8 +412,8 @@ func PutHandler(ctx *context.Context) {
 	}
 
 	contentStore := &ContentStore{ObjectStorage: storage.LFS}
-	defer ctx.Req.Request.Body.Close()
-	if err := contentStore.Put(meta, ctx.Req.Request.Body); err != nil {
+	defer ctx.Req.Body.Close()
+	if err := contentStore.Put(meta, ctx.Req.Body); err != nil {
 		// Put will log the error itself
 		ctx.Resp.WriteHeader(500)
 		if err == errSizeMismatch || err == errHashMismatch {
@@ -513,7 +512,7 @@ func Represent(rv *RequestVars, meta *models.LFSMetaObject, download, upload boo
 
 // MetaMatcher provides a mux.MatcherFunc that only allows requests that contain
 // an Accept header with the metaMediaType
-func MetaMatcher(r macaron.Request) bool {
+func MetaMatcher(r *http.Request) bool {
 	mediaParts := strings.Split(r.Header.Get("Accept"), ";")
 	mt := mediaParts[0]
 	return mt == metaMediaType
@@ -530,7 +529,7 @@ func unpack(ctx *context.Context) *RequestVars {
 
 	if r.Method == "POST" { // Maybe also check if +json
 		var p RequestVars
-		bodyReader := r.Body().ReadCloser()
+		bodyReader := r.Body
 		defer bodyReader.Close()
 		dec := json.NewDecoder(bodyReader)
 		err := dec.Decode(&p)
@@ -553,7 +552,7 @@ func unpackbatch(ctx *context.Context) *BatchVars {
 	r := ctx.Req
 	var bv BatchVars
 
-	bodyReader := r.Body().ReadCloser()
+	bodyReader := r.Body
 	defer bodyReader.Close()
 	dec := json.NewDecoder(bodyReader)
 	err := dec.Decode(&bv)
@@ -586,7 +585,7 @@ func writeStatus(ctx *context.Context, status int) {
 	logRequest(ctx.Req, status)
 }
 
-func logRequest(r macaron.Request, status int) {
+func logRequest(r *http.Request, status int) {
 	log.Debug("LFS request - Method: %s, URL: %s, Status %d", r.Method, r.URL, status)
 }