dumpstate: Add dumpstate device AIDL HAL

- Add interface AIDL files
- Add default example service. Example service is setup as a
  lazy service.
- Add VTS test having same coverage as dumpstate device HIDL
  1.1 VTS tests

Bug: 205760700
Test: VtsHalDumpstateTargetTest, dumpstate, dumpstate_test, dumpsys
Change-Id: I63f177af5e1e16cad392ce594f1b438e5610d757
diff --git a/dumpstate/aidl/default/dumpstate-default.rc b/dumpstate/aidl/default/dumpstate-default.rc
new file mode 100644
index 0000000..4d011dd
--- /dev/null
+++ b/dumpstate/aidl/default/dumpstate-default.rc
@@ -0,0 +1,7 @@
+service vendor.dumpstate-default /vendor/bin/hw/android.hardware.dumpstate-service.example
+    class hal
+    user nobody
+    group nobody
+    interface aidl android.hardware.dumpstate.IDumpstateDevice/default
+    oneshot
+    disabled