GameBar: sepolicy: Create compatibility mapping files

This fixes the following error while building targets
with shipping API level of 202404:

  SELinux: The following public types were found added to the policy without an entry into the compatibility mapping file(s) found in private/compat/V.v/V.v[.ignore].cil, where V.v is the latest API level.
gamebar_app

Signed-off-by: kenway214 <kenway214@outlook.com>

sepolicy/private/compat/202404/202404.ignore.cil

@@ -0,0 +1,8 @@
+;; new_objects - a collection of types that have been introduced that have no
+;;   analogue in older policy.  Thus, we do not need to map these types to
+;;   previous ones.  Add here to pass checkapi tests.
+(type new_objects)
+(typeattribute new_objects)
+(typeattributeset new_objects
+  ( new_objects
+    gamebar_app))