Maintainers.txt: Add .pytool maintainers to BaseTools/Plugin

Plugins can be placed either in .pytool/Plugin (CI plugin) or
BaseTools/Plugin (build plugin).

Since most of the .pytool maintainers already review many of the
plugins placed there, the same maintainers are added for the Plugin
directory in BaseTools to increase the total number of maintainers
for plugin changes.

Cc: Bob Feng <[email protected]>
Cc: Liming Gao <[email protected]>
Cc: Michael D Kinney <[email protected]>
Cc: Rebecca Cran <[email protected]>
Cc: Sean Brogan <[email protected]>
Cc: Yuwei Chen <[email protected]>
Signed-off-by: Michael Kubacki <[email protected]>
Reviewed-by: Michael D Kinney <[email protected]>
Reviewed-by: Liming Gao <[email protected]>

Maintainers.txt

@@ -175,6 +175,13 @@ M: Liming Gao <[email protected]> [lgao4]
 R: Bob Feng <[email protected]> [BobCF]
 R: Yuwei Chen <[email protected]> [YuweiChen1110]
 
+BaseTools: Plugins
+F: BaseTools/Plugin/
+M: Sean Brogan <[email protected]> [spbrogan]
+M: Michael Kubacki <[email protected]> [makubacki]
+R: Michael D Kinney <[email protected]> [mdkinney]
+R: Liming Gao <[email protected]> [lgao4]
+
 CryptoPkg
 F: CryptoPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/CryptoPkg