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/forms/admin.go

@@ -0,0 +1,70 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package forms
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/middlewares"
+
+	"gitea.com/go-chi/binding"
+)
+
+// AdminCreateUserForm form for admin to create user
+type AdminCreateUserForm struct {
+	LoginType          string `binding:"Required"`
+	LoginName          string
+	UserName           string `binding:"Required;AlphaDashDot;MaxSize(40)"`
+	Email              string `binding:"Required;Email;MaxSize(254)"`
+	Password           string `binding:"MaxSize(255)"`
+	SendNotify         bool
+	MustChangePassword bool
+}
+
+// Validate validates form fields
+func (f *AdminCreateUserForm) Validate(req *http.Request, errs binding.Errors) binding.Errors {
+	ctx := context.GetContext(req)
+	return middlewares.Validate(errs, ctx.Data, f, ctx.Locale)
+}
+
+// AdminEditUserForm form for admin to create user
+type AdminEditUserForm struct {
+	LoginType               string `binding:"Required"`
+	UserName                string `binding:"AlphaDashDot;MaxSize(40)"`
+	LoginName               string
+	FullName                string `binding:"MaxSize(100)"`
+	Email                   string `binding:"Required;Email;MaxSize(254)"`
+	Password                string `binding:"MaxSize(255)"`
+	Website                 string `binding:"ValidUrl;MaxSize(255)"`
+	Location                string `binding:"MaxSize(50)"`
+	MaxRepoCreation         int
+	Active                  bool
+	Admin                   bool
+	Restricted              bool
+	AllowGitHook            bool
+	AllowImportLocal        bool
+	AllowCreateOrganization bool
+	ProhibitLogin           bool
+	Reset2FA                bool `form:"reset_2fa"`
+}
+
+// Validate validates form fields
+func (f *AdminEditUserForm) Validate(req *http.Request, errs binding.Errors) binding.Errors {
+	ctx := context.GetContext(req)
+	return middlewares.Validate(errs, ctx.Data, f, ctx.Locale)
+}
+
+// AdminDashboardForm form for admin dashboard operations
+type AdminDashboardForm struct {
+	Op   string `binding:"required"`
+	From string
+}
+
+// Validate validates form fields
+func (f *AdminDashboardForm) Validate(req *http.Request, errs binding.Errors) binding.Errors {
+	ctx := context.GetContext(req)
+	return middlewares.Validate(errs, ctx.Data, f, ctx.Locale)
+}