[chore] add git mailmap for proper attribution of authorship (go-gitea#33612)

strk · web-flow · commit 37c4f3760cda · 2025-02-16T20:49:28.000+08:00
diff --git a/.mailmap b/.mailmap
@@ -0,0 +1,2 @@
+Unknwon <u@gogs.io> <joe2010xtmf@163.com>
+Unknwon <u@gogs.io> 无闻 <u@gogs.io>

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Unknwon <[email protected]> <[email protected]>`
	`2`	`+Unknwon <[email protected]> 无闻 <[email protected]>`