SystemMenu: Add hotkeys for Internet menu

Author: https://github.com/hughdavenport
Commit: https://github.com/SerenityOS/serenity/commit/1e8002d7c7
Pull-request: https://github.com/SerenityOS/serenity/pull/22560
Reviewed-by: https://github.com/ADKaster ✅

Base/res/apps/Browser.af

@@ -1,7 +1,7 @@
 [App]
-Name=Ladybird
+Name=&Ladybird
 Executable=/bin/Browser
-Category=Internet
+Category=&Internet
 
 [Launcher]
 FileTypes=html,htm

Base/res/apps/Mail.af

@@ -1,4 +1,4 @@
 [App]
-Name=Mail
+Name=&Mail
 Executable=/bin/Mail
-Category=Internet
+Category=&Internet

Base/res/apps/Maps.af

@@ -1,5 +1,5 @@
 [App]
-Name=Maps
+Name=M&aps
 Executable=/bin/Maps
-Category=Internet
+Category=&Internet
 Description=Explore the world

Base/res/icons/SystemMenu.ini

@@ -4,7 +4,7 @@ D&evelopment=/res/icons/16x16/development.png
 &Games=/res/icons/16x16/games.png
 &Games/Puzzles=/res/icons/16x16/games.png
 Gra&phics=/res/icons/16x16/graphics.png
-Internet=/res/icons/16x16/internet.png
+&Internet=/res/icons/16x16/internet.png
 Office=/res/icons/16x16/office.png
 Settings=/res/icons/16x16/settings.png
 Media=/res/icons/16x16/multimedia.png