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/middlewares/cookie.go

@@ -1,3 +1,4 @@
+// Copyright 2020 The Macaron Authors
 // Copyright 2020 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
@@ -12,6 +13,56 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 )
 
+// MaxAge sets the maximum age for a provided cookie
+func MaxAge(maxAge int) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.MaxAge = maxAge
+	}
+}
+
+// Path sets the path for a provided cookie
+func Path(path string) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.Path = path
+	}
+}
+
+// Domain sets the domain for a provided cookie
+func Domain(domain string) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.Domain = domain
+	}
+}
+
+// Secure sets the secure setting for a provided cookie
+func Secure(secure bool) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.Secure = secure
+	}
+}
+
+// HTTPOnly sets the HttpOnly setting for a provided cookie
+func HTTPOnly(httpOnly bool) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.HttpOnly = httpOnly
+	}
+}
+
+// Expires sets the expires and rawexpires for a provided cookie
+func Expires(expires time.Time) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.Expires = expires
+		c.RawExpires = expires.Format(time.UnixDate)
+	}
+}
+
+// SameSite sets the SameSite for a provided cookie
+func SameSite(sameSite http.SameSite) func(*http.Cookie) {
+	return func(c *http.Cookie) {
+		c.SameSite = sameSite
+	}
+}
+
 // NewCookie creates a cookie
 func NewCookie(name, value string, maxAge int) *http.Cookie {
 	return &http.Cookie{
@@ -102,3 +153,13 @@ func SetCookie(resp http.ResponseWriter, name string, value string, others ...in
 
 	resp.Header().Add("Set-Cookie", cookie.String())
 }
+
+// GetCookie returns given cookie value from request header.
+func GetCookie(req *http.Request, name string) string {
+	cookie, err := req.Cookie(name)
+	if err != nil {
+		return ""
+	}
+	val, _ := url.QueryUnescape(cookie.Value)
+	return val
+}