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/api/v1/repo/issue.go

@@ -22,6 +22,7 @@ import (
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/api/v1/utils"
 	issue_service "code.gitea.io/gitea/services/issue"
 )
@@ -448,7 +449,7 @@ func GetIssue(ctx *context.APIContext) {
 }
 
 // CreateIssue create an issue of a repository
-func CreateIssue(ctx *context.APIContext, form api.CreateIssueOption) {
+func CreateIssue(ctx *context.APIContext) {
 	// swagger:operation POST /repos/{owner}/{repo}/issues issue issueCreateIssue
 	// ---
 	// summary: Create an issue. If using deadline only the date will be taken into account, and time of day ignored.
@@ -480,7 +481,7 @@ func CreateIssue(ctx *context.APIContext, form api.CreateIssueOption) {
 	//     "$ref": "#/responses/error"
 	//   "422":
 	//     "$ref": "#/responses/validationError"
-
+	form := web.GetForm(ctx).(*api.CreateIssueOption)
 	var deadlineUnix timeutil.TimeStamp
 	if form.Deadline != nil && ctx.Repo.CanWrite(models.UnitTypeIssues) {
 		deadlineUnix = timeutil.TimeStamp(form.Deadline.Unix())
@@ -564,7 +565,7 @@ func CreateIssue(ctx *context.APIContext, form api.CreateIssueOption) {
 }
 
 // EditIssue modify an issue of a repository
-func EditIssue(ctx *context.APIContext, form api.EditIssueOption) {
+func EditIssue(ctx *context.APIContext) {
 	// swagger:operation PATCH /repos/{owner}/{repo}/issues/{index} issue issueEditIssue
 	// ---
 	// summary: Edit an issue. If using deadline only the date will be taken into account, and time of day ignored.
@@ -603,6 +604,7 @@ func EditIssue(ctx *context.APIContext, form api.EditIssueOption) {
 	//   "412":
 	//     "$ref": "#/responses/error"
 
+	form := web.GetForm(ctx).(*api.EditIssueOption)
 	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
 	if err != nil {
 		if models.IsErrIssueNotExist(err) {
@@ -723,7 +725,7 @@ func EditIssue(ctx *context.APIContext, form api.EditIssueOption) {
 }
 
 // UpdateIssueDeadline updates an issue deadline
-func UpdateIssueDeadline(ctx *context.APIContext, form api.EditDeadlineOption) {
+func UpdateIssueDeadline(ctx *context.APIContext) {
 	// swagger:operation POST /repos/{owner}/{repo}/issues/{index}/deadline issue issueEditIssueDeadline
 	// ---
 	// summary: Set an issue deadline. If set to null, the deadline is deleted. If using deadline only the date will be taken into account, and time of day ignored.
@@ -759,7 +761,7 @@ func UpdateIssueDeadline(ctx *context.APIContext, form api.EditDeadlineOption) {
 	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
-
+	form := web.GetForm(ctx).(*api.EditDeadlineOption)
 	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
 	if err != nil {
 		if models.IsErrIssueNotExist(err) {