Move utility functions to a common library

This change creates a library that contains utility functions commonly
used in different EVS versions.

Bug: 13542573
Test: VTS
Change-Id: Ica8f5e6228d7d4b1426d8cc9cd2c570d6b584897
Signed-off-by: Changyeon Jo <changyeon@google.com>
diff --git a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
index 117c249..8dcd969 100644
--- a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
+++ b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
@@ -2,3 +2,4 @@
     class hal
     user automotive_evs
     group automotive_evs
+    disabled # do not start automatically