Convert JSON protocol to efficient binary format

- Implemented compact binary encoding for packets and messages
- Reduced packet size significantly (13-byte fixed header + variable payload)
- Optimized for BLE's limited MTU with smaller message sizes
- Added BinaryProtocol.swift with encode/decode functions
- Updated all message types to use binary serialization
- Maintains all existing functionality with better performance

Package.swift

@@ -17,10 +17,7 @@ let package = Package(
     targets: [
         .executableTarget(
             name: "bitchat",
-            path: "bitchat",
-            resources: [
-                .process("Info.plist")
-            ]
+            path: "bitchat"
         ),
     ]
 )