Feature: Find files in repo (#15028)

* Create finding files page ui in repo page

* Get tree entries for find repo files.

* Move find files JS to individual file.

* gen swagger.

* Add enry.IsVendor to exclude entries

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

routers/web/repo/find.go

@@ -0,0 +1,24 @@
+// Copyright 2022 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 repo
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/context"
+)
+
+const (
+	tplFindFiles base.TplName = "repo/find/files"
+)
+
+// FindFiles render the page to find repository files
+func FindFiles(ctx *context.Context) {
+	path := ctx.Params("*")
+	ctx.Data["TreeLink"] = ctx.Repo.RepoLink + "/src/" + path
+	ctx.Data["DataLink"] = ctx.Repo.RepoLink + "/tree-list/" + path
+	ctx.HTML(http.StatusOK, tplFindFiles)
+}