Merge "[BR01.1] Support BpfNetMapsReader" into main

Tethering/Android.bp

common/Android.bp

framework/Android.bp

framework/src/android/net/BpfNetMapsReader.java

framework/src/android/net/BpfNetMapsUtils.java

framework/src/android/net/UidOwnerValue.java

service/Android.bp

service/src/com/android/server/BpfNetMaps.java

staticlibs/Android.bp

staticlibs/testutils/Android.bp

...stutils/devicetests/com/android/testutils/TestBpfMap.java

tests/unit/java/android/net/BpfNetMapsReaderTest.kt

tests/unit/java/com/android/server/BpfNetMapsTest.java