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/user/setting/profile.go

@@ -14,12 +14,13 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/context"
+	auth "code.gitea.io/gitea/modules/forms"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/web"
 
 	"github.com/unknwon/i18n"
 )
@@ -71,7 +72,8 @@ func HandleUsernameChange(ctx *context.Context, user *models.User, newName strin
 }
 
 // ProfilePost response for change user's profile
-func ProfilePost(ctx *context.Context, form auth.UpdateProfileForm) {
+func ProfilePost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.UpdateProfileForm)
 	ctx.Data["Title"] = ctx.Tr("settings")
 	ctx.Data["PageIsSettingsProfile"] = true
 
@@ -123,7 +125,7 @@ func ProfilePost(ctx *context.Context, form auth.UpdateProfileForm) {
 
 // UpdateAvatarSetting update user's avatar
 // FIXME: limit size.
-func UpdateAvatarSetting(ctx *context.Context, form auth.AvatarForm, ctxUser *models.User) error {
+func UpdateAvatarSetting(ctx *context.Context, form *auth.AvatarForm, ctxUser *models.User) error {
 	ctxUser.UseCustomAvatar = form.Source == auth.AvatarLocal
 	if len(form.Gravatar) > 0 {
 		if form.Avatar != nil {
@@ -171,7 +173,8 @@ func UpdateAvatarSetting(ctx *context.Context, form auth.AvatarForm, ctxUser *mo
 }
 
 // AvatarPost response for change user's avatar request
-func AvatarPost(ctx *context.Context, form auth.AvatarForm) {
+func AvatarPost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.AvatarForm)
 	if err := UpdateAvatarSetting(ctx, form, ctx.User); err != nil {
 		ctx.Flash.Error(err.Error())
 	} else {