Support for status check pattern (#24633)

This PR is to allow users to specify status checks by patterns. Users
can enter patterns in the "Status Check Pattern" `textarea` to match
status checks and each line specifies a pattern. If "Status Check" is
enabled, patterns cannot be empty and user must enter at least one
pattern.
Users will no longer be able to choose status checks from the table. But
a __*`Matched`*__ mark will be added to the matched checks to help users
enter patterns.

Benefits:
- Even if no status checks have been completed, users can specify
necessary status checks in advance.
- More flexible. Users can specify a series of status checks by one
pattern.

Before:

![image](635738ad-580c-49cd-941d-c721e5b99be4)

After:

![image](16aa7b1b-abf1-4170-9bfa-ae6fc9803a82)

---------

Co-authored-by: silverwind <me@silverwind.io>

routers/web/repo/pull.go

@@ -45,6 +45,8 @@ import (
 	"code.gitea.io/gitea/services/gitdiff"
 	pull_service "code.gitea.io/gitea/services/pull"
 	repo_service "code.gitea.io/gitea/services/repository"
+
+	"github.com/gobwas/glob"
 )
 
 const (
@@ -575,7 +577,7 @@ func PrepareViewPullInfo(ctx *context.Context, issue *issues_model.Issue) *git.C
 	if pb != nil && pb.EnableStatusCheck {
 		ctx.Data["is_context_required"] = func(context string) bool {
 			for _, c := range pb.StatusCheckContexts {
-				if c == context {
+				if gp, err := glob.Compile(c); err == nil && gp.Match(context) {
 					return true
 				}
 			}