feat: Improve Mycelium client and streamer

- Changed Mycelium worker port to avoid conflict with master.
- Added debug print statements to Mycelium client for better troubleshooting.
- Removed unnecessary `SyncData` struct, simplifying data handling.
- Updated data encoding/decoding to directly use base64 for efficiency.
- Clarified message topic names for better understanding.

examples/data/deduped_mycelium_worker.vsh

@@ -6,7 +6,7 @@ import freeflowuniverse.herolib.data.ourdb
 mut streamer := ourdb.get_streamer(id: 'frBvtZQeqf') or {
 	ourdb.new_streamer(
 		incremental_mode: false
-		server_port:      9001 // Use different port than master
+		server_port:      9000 // Use different port than master
 		is_worker:        true
 	)!
 }