asterisk: 24.0.0-rc2 image built from source with static config

Adds stub configs and noloads so a clean boot logs no ERROR lines,
ships stock indications.conf, seeds default MOH from the entrypoint.
Spec 01 synced with the real files.

Task: M0-T5

asterisk/conf/cdr_manager.conf

@@ -0,0 +1,6 @@
+[general]
+enabled = yes
+[mappings]
+SP_DID => sp_did
+SP_DIRECTION => sp_direction
+SP_REC => sp_recording