feat: Implement bidirectional synchronization utilities for Advoware and EspoCRM communications

- Added KommunikationSyncManager class to handle synchronization logic.
- Implemented methods for loading data, computing diffs, and applying changes between Advoware and EspoCRM.
- Introduced 3-way diffing mechanism to intelligently resolve conflicts.
- Added helper methods for creating empty slots and detecting changes in communications.
- Enhanced logging for better traceability during synchronization processes.

bitbylaw/services/beteiligte_sync_utils.py

@@ -77,7 +77,7 @@ class BeteiligteSync:
                 acquired = self.redis.set(lock_key, "locked", nx=True, ex=LOCK_TTL_SECONDS)
                 
                 if not acquired:
-                    self._log(f"Redis lock bereits aktiv für {entity_id}", level='warning')
+                    self._log(f"Redis lock bereits aktiv für {entity_id}", level='warn')
                     return False
             
             # STEP 2: Update syncStatus (für UI visibility)
@@ -214,7 +214,7 @@ class BeteiligteSync:
                 return datetime.fromisoformat(ts)
                 
             except Exception as e:
-                logger.warning(f"Konnte Timestamp nicht parsen: {ts} - {e}")
+                logger.warn(f"Konnte Timestamp nicht parsen: {ts} - {e}")
                 return None
         
         return None