Add mailmap

Byron · Byron · commit 0987142e3654 · 2022-04-04T11:31:31.000+08:00
Thanks onefetch for making me :).
diff --git a/.mailmap b/.mailmap
@@ -0,0 +1,2 @@
+<sebastian.thiel@icloud.com> <byronimo@gmail.com>  
+<sebastian.thiel@icloud.com> <sthiel@thoughtworks.com>

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