[incremental] Java service and shell command handler

Renaming:

IIncrementalManager.aidl -> IIncrementalManagerNative.aidl
IIncrementalServiceProxy.aidl -> IIncrementalManager.aidl

Adding implementation of IIncrementalManager.aidl. Also adding
implementation of the shell command handler.

Test: $adb abb incremental help

Change-Id: Ia18fde097f6170f4774552428a2927186ede8389
diff --git a/Android.bp b/Android.bp
index 04b4e6e..2e750f9 100644
--- a/Android.bp
+++ b/Android.bp
@@ -804,8 +804,8 @@
 filegroup {
     name: "incremental_aidl",
     srcs: [
+        "core/java/android/os/incremental/IIncrementalManagerNative.aidl",
         "core/java/android/os/incremental/IIncrementalManager.aidl",
-        "core/java/android/os/incremental/IIncrementalServiceProxy.aidl",
         "core/java/android/os/incremental/IncrementalDataLoaderParamsParcel.aidl",
         "core/java/android/os/incremental/IncrementalFileSystemControlParcel.aidl",
         "core/java/android/os/incremental/NamedParcelFileDescriptor.aidl",