Split CompOS interface in two

One service for system server (which will become stable), one for
internal calls from odrefresh (which will probably go away soon).

Test: compos_cmd forced-compile-test
Bug: 199147668
Change-Id: Ia7024e18fe1708eafb673a68b944c3f011715f11
diff --git a/compos/composd/Android.bp b/compos/composd/Android.bp
index 8391ed6..a76d96c 100644
--- a/compos/composd/Android.bp
+++ b/compos/composd/Android.bp
@@ -9,6 +9,7 @@
     prefer_rlib: true,
     rustlibs: [
         "android.system.composd-rust",
+        "android.system.composd.internal-rust",
         "android.system.virtualizationservice-rust",
         "compos_aidl_interface-rust",
         "libandroid_logger",