refactor: make git package handle all git operations (#38543)

before: gitrepo vs git packages
after: git package fully handle all git operations

by the way, use `WithRepo(repo)` instead of `WithDir(repo.Path)` to hide
path details.

benefits:

1. remove all unnecessary wrappers, developers no need to struggle with
"which package should be used"
2. simplify code, RepositoryFacade can (will) be used everywhere, all
"path" details are (will be) hidden

routers/web/repo/githttp.go

@@ -24,7 +24,6 @@ import (
 	"gitea.dev/models/unit"
 	"gitea.dev/modules/git"
 	"gitea.dev/modules/git/gitcmd"
-	"gitea.dev/modules/gitrepo"
 	"gitea.dev/modules/log"
 	repo_module "gitea.dev/modules/repository"
 	"gitea.dev/modules/setting"
@@ -273,7 +272,7 @@ func dummyInfoRefs(ctx *context.Context) {
 		}
 		defer cleanup()
 
-		if err := git.InitRepository(ctx, tmpDir, true, git.Sha1ObjectFormat.Name()); err != nil {
+		if err := git.InitRepositoryLocal(ctx, tmpDir, true, git.Sha1ObjectFormat.Name()); err != nil {
 			log.Error("Failed to init bare repo for git-receive-pack cache: %v", err)
 			return
 		}
@@ -343,7 +342,7 @@ func (h *serviceHandler) sendFile(ctx *context.Context, contentType, file string
 		return
 	}
 
-	fs := gitrepo.GetRepoFS(h.getStorageRepo())
+	fs := git.GetRepoFS(h.getStorageRepo())
 	ctx.Resp.Header().Set("Content-Type", contentType)
 	http.ServeFileFS(ctx.Resp, ctx.Req, fs, path.Clean(file))
 }
@@ -463,7 +462,7 @@ func GetInfoRefs(ctx *context.Context) {
 	if h.serviceType == "" {
 		// it's said that some legacy git clients will send requests to "/info/refs" without "service" parameter,
 		// although there should be no such case client in the modern days. TODO: not quite sure why we need this UpdateServerInfo logic
-		if err := gitrepo.UpdateServerInfo(ctx, h.getStorageRepo()); err != nil {
+		if err := git.UpdateServerInfo(ctx, h.getStorageRepo()); err != nil {
 			ctx.ServerError("UpdateServerInfo", err)
 			return
 		}