Add Protocol Buffers support to IPCManager and Maven build:

- Created `messages.proto` to define `TextMessage` schema.
- Integrated Protocol Buffers Java library into Maven dependencies.
- Configured Maven plugins for Protocol Buffers compilation and generated source management.
- Implemented message serialization and deserialization in `IPCManager`.
- Enhanced client handling to process and respond with Protocol Buffers messages.

src/main/proto/messages.proto

@@ -0,0 +1,9 @@
+syntax = "proto3";
+
+option java_package = "com.mediamanager.protocol";
+option java_outer_classname = "SimpleProtocol";
+package mediamanager;
+
+message TextMessage {
+  string content = 1;  // O texto da mensagem
+}