Move some repository related code into sub package (#19711)

* Move some repository related code into sub package

* Move more repository functions out of models

* Fix lint

* Some performance optimization for webhooks and others

* some refactors

* Fix lint

* Fix

* Update modules/repository/delete.go

Co-authored-by: delvh <dev.lh@web.de>

* Fix test

* Merge

* Fix test

* Fix test

* Fix test

* Fix test

Co-authored-by: delvh <dev.lh@web.de>

modules/repository/generate_test.go

@@ -0,0 +1,57 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package repository
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var giteaTemplate = []byte(`
+# Header
+
+# All .go files
+**.go
+
+# All text files in /text/
+text/*.txt
+
+# All files in modules folders
+**/modules/*
+`)
+
+func TestGiteaTemplate(t *testing.T) {
+	gt := GiteaTemplate{Content: giteaTemplate}
+	assert.Len(t, gt.Globs(), 3)
+
+	tt := []struct {
+		Path  string
+		Match bool
+	}{
+		{Path: "main.go", Match: true},
+		{Path: "a/b/c/d/e.go", Match: true},
+		{Path: "main.txt", Match: false},
+		{Path: "a/b.txt", Match: false},
+		{Path: "text/a.txt", Match: true},
+		{Path: "text/b.txt", Match: true},
+		{Path: "text/c.json", Match: false},
+		{Path: "a/b/c/modules/README.md", Match: true},
+		{Path: "a/b/c/modules/d/README.md", Match: false},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.Path, func(t *testing.T) {
+			match := false
+			for _, g := range gt.Globs() {
+				if g.Match(tc.Path) {
+					match = true
+					break
+				}
+			}
+			assert.Equal(t, tc.Match, match)
+		})
+	}
+}