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>

2 files changed, 4 insertions, 7 deletions

diff --git a/cmd/dump.go b/cmd/dump.go
index 1a2e625767..65e2c817f9 100644
--- a/cmd/dump.go
+++ b/cmd/dump.go
@@ -21,7 +21,7 @@ import (
 	"code.gitea.io/gitea/modules/storage"
 	"code.gitea.io/gitea/modules/util"
 
-	"gitea.com/macaron/session"
+	"gitea.com/go-chi/session"
 	archiver "github.com/mholt/archiver/v3"
 	"github.com/urfave/cli"
 )
diff --git a/cmd/web.go b/cmd/web.go
index 2e8c45a76e..79915ad194 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -102,8 +102,7 @@ func runWeb(ctx *cli.Context) error {
 				return err
 			}
 		}
-		c := routes.NewChi()
-		routes.RegisterInstallRoute(c)
+		c := routes.InstallRoutes()
 		err := listen(c, false)
 		select {
 		case <-graceful.GetManager().IsShutdown():
@@ -134,11 +133,9 @@ func runWeb(ctx *cli.Context) error {
 			return err
 		}
 	}
-	// Set up Chi routes
-	c := routes.NewChi()
-	c.Mount("/", routes.NormalRoutes())
-	routes.DelegateToMacaron(c)
 
+	// Set up Chi routes
+	c := routes.NormalRoutes()
 	err := listen(c, true)
 	<-graceful.GetManager().Done()
 	log.Info("PID: %d Gitea Web Finished", os.Getpid())