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>

integrations/integration_test.go

@@ -31,15 +31,15 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/storage"
 	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers"
 	"code.gitea.io/gitea/routers/routes"
 
 	"github.com/PuerkitoBio/goquery"
-	"github.com/go-chi/chi"
 	"github.com/stretchr/testify/assert"
 )
 
-var c chi.Router
+var c *web.Route
 
 type NilResponseRecorder struct {
 	httptest.ResponseRecorder
@@ -66,9 +66,7 @@ func TestMain(m *testing.M) {
 	defer cancel()
 
 	initIntegrationTest()
-	c = routes.NewChi()
-	c.Mount("/", routes.NormalRoutes())
-	routes.DelegateToMacaron(c)
+	c = routes.NormalRoutes()
 
 	// integration test settings...
 	if setting.Cfg != nil {
@@ -387,6 +385,9 @@ func NewRequestWithJSON(t testing.TB, method, urlStr string, v interface{}) *htt
 
 func NewRequestWithBody(t testing.TB, method, urlStr string, body io.Reader) *http.Request {
 	t.Helper()
+	if !strings.HasPrefix(urlStr, "http") && !strings.HasPrefix(urlStr, "/") {
+		urlStr = "/" + urlStr
+	}
 	request, err := http.NewRequest(method, urlStr, body)
 	assert.NoError(t, err)
 	request.RequestURI = urlStr