Add Git mailmap for Andy Jordan (PowerShell#19469)

andyleejordan · web-flow · commit 6e34b1b7ac5c · 2023-04-26T11:33:28.000-07:00
This makes Git transparently remap commits under my prior name and email
to my new name and Microsoft email.
diff --git a/.mailmap b/.mailmap
@@ -0,0 +1 @@
+Andy Jordan <andy.jordan@microsoft.com> <andrew@schwartzmeyer.com>

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Andy Jordan <andy.jordan@microsoft.com> <andrew@schwartzmeyer.com>`