Apply to become a maintainer (#13201)

Dear gitea's managers and contributors, I apply to become a
maintainer of gitea. I'm interested in this project and has
sent prs to gitea also. I will do more things to make gitea
better and reviw other contributors's pr in my free time.
Thanks.

Signed-off-by: a1012112796 <[email protected]>

Co-authored-by: techknowlogick <[email protected]>

Author: a1012112796

MAINTAINERS

@@ -37,3 +37,4 @@ Mura Li <[email protected]> (@typeless)
 jaqra <[email protected]> (@jaqra)
 David Svantesson <[email protected]> (@davidsvantesson)
 CirnoT <[email protected]> (@CirnoT)
+a1012112796 <[email protected]> (@a1012112796)