Unify navigation on NavigateToPose and remove legacy proxies

ros2/bt_skill_interfaces/msg/NavigationResult.msg

@@ -1,15 +0,0 @@
-# Navigation-specific outcomes; do not decode with ExecutionResult enum values.
-uint8 SUCCEEDED=0
-uint8 CANCELED=1
-uint8 TIMEOUT=2
-uint8 BLOCKED=3
-uint8 NOT_READY=4
-uint8 FAILED=5
-uint8 UNKNOWN=0
-uint8 CONFIRMED=1
-uint8 status
-string error_code
-string message
-uint8 stop_state
-builtin_interfaces/Time stopped_at
-string stop_evidence_ref