Add status indicator on main home screen for each repo (#24638)

It will show the calculated commit status state of the latest commit on
the default branch for each repository in the dashboard repo list

- Closes #15620

# Before

![image](aa1326c7-43c0-458a-a798-3102c766bcf9)

# After

![image](8658cc03-2224-442a-b1c8-bf64126e4575)

---------

Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Giteabot <teabot@gitea.io>

modules/git/repo_branch.go

@@ -106,6 +106,17 @@ func GetBranchesByPath(ctx context.Context, path string, skip, limit int) ([]*Br
 	return gitRepo.GetBranches(skip, limit)
 }
 
+// GetBranchCommitID returns a branch commit ID by its name
+func GetBranchCommitID(ctx context.Context, path, branch string) (string, error) {
+	gitRepo, err := OpenRepository(ctx, path)
+	if err != nil {
+		return "", err
+	}
+	defer gitRepo.Close()
+
+	return gitRepo.GetBranchCommitID(branch)
+}
+
 // GetBranches returns a slice of *git.Branch
 func (repo *Repository) GetBranches(skip, limit int) ([]*Branch, int, error) {
 	brs, countAll, err := repo.GetBranchNames(skip, limit)