Implement sysprop_library API stability check

sysprop_library now checks the API stability itself, cutting dependency
on java_sdk_library. Under the directory {module_dir}/api,
{module_name}-current.txt and {module_name}-latest.txt hold API
signatures.

When sysprop_library is built, or a user run "m {module_name}-check-api"
command, API check is performed. First, current.txt must have exactly
same signature with built sysprop_library module. Second, current.txt
must be compatible with latest.txt.

Build system emits a handy error message to generate/update those API
files, in case of missing or mismatching. Also, a script file for
freezing API files is introduced.

Bug: 131637873
Test: 1) m && boot blueline
Test: 2) m {sysprop_library} performs API check
Test: 3) manual test for check-api, freezing api
Change-Id: I6d69fb418bac675bbb9e4ac25c3269dfa3029219
diff --git a/Android.bp b/Android.bp
index 7687270..b2fee7a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -695,9 +695,6 @@
         "core/java/com/android/server/DropboxLogTags.logtags",
         "core/java/org/chromium/arc/EventLogTags.logtags",
 
-        ":apex-properties",
-        ":platform-properties",
-
         ":framework-statslog-gen",
     ],
 
@@ -786,6 +783,9 @@
         "android.hardware.vibrator-V1.3-java",
         "android.hardware.wifi-V1.0-java-constants",
         "devicepolicyprotosnano",
+
+        "com.android.sysprop.apex",
+        "PlatformProperties",
     ],
 
     required: [