Speed up enry.IsVendor (#15213)

`enry.IsVendor` is kinda slow as it simply iterates across all regexps.
This PR ajdusts the regexps to combine them to make this process a
little quicker.

Related #15143

Signed-off-by: Andrew Thornton <art27@cantab.net>

modules/git/repo_language_stats_gogit.go

@@ -43,7 +43,7 @@ func (repo *Repository) GetLanguageStats(commitID string) (map[string]int64, err
 
 	sizes := make(map[string]int64)
 	err = tree.Files().ForEach(func(f *object.File) error {
-		if f.Size == 0 || enry.IsVendor(f.Name) || enry.IsDotFile(f.Name) ||
+		if f.Size == 0 || analyze.IsVendor(f.Name) || enry.IsDotFile(f.Name) ||
 			enry.IsDocumentation(f.Name) || enry.IsConfiguration(f.Name) {
 			return nil
 		}