Expose SensorPrivacy as SystemApi

Rename the apis to be more consistent.
Also expose to test api.
Have the aosp mark that it supports the toggle features by default.

Test: atest CtsSensorPrivacyTestCases
Bug: 162549680

Change-Id: Ib38c16adfc5cec931347e1a1891618983d78248b
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index 2594840..53fbb00 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -398,6 +398,7 @@
 
     <!-- Permission required for CTS to test sensor privacy behavior -->
     <uses-permission android:name="android.permission.MANAGE_SENSOR_PRIVACY" />
+    <uses-permission android:name="android.permission.OBSERVE_SENSOR_PRIVACY" />
 
     <!-- Permission needed for CTS test - CallLogTest -->
     <uses-permission android:name="com.android.voicemail.permission.READ_VOICEMAIL" />