Avatars and Repo avatars support storing in minio (#12516)

* Avatar support minio

* Support repo avatar minio storage

* Add missing migration

* Fix bug

* Fix test

* Add test for minio store type on avatars and repo avatars; Add documents

* Fix bug

* Fix bug

* Add back missed avatar link method

* refactor codes

* Simplify the codes

* Code improvements

* Fix lint

* Fix test mysql

* Fix test mysql

* Fix test mysql

* Fix settings

* Fix test

* fix test

* Fix bug

integrations/mysql.ini.tmpl

@@ -58,7 +58,7 @@ LFS_MINIO_BASE_PATH = lfs/
 LFS_MINIO_USE_SSL = false
 
 [attachment]
-STORE_TYPE = minio
+STORAGE_TYPE = minio
 SERVE_DIRECT = false
 MINIO_ENDPOINT = minio:9000
 MINIO_ACCESS_KEY_ID = 123456
@@ -87,6 +87,7 @@ ENABLE_NOTIFY_MAIL                = true
 [picture]
 DISABLE_GRAVATAR              = false
 ENABLE_FEDERATED_AVATAR       = false
+
 AVATAR_UPLOAD_PATH            = integrations/gitea-integration-mysql/data/avatars
 REPOSITORY_AVATAR_UPLOAD_PATH = integrations/gitea-integration-mysql/data/repo-avatars