Network Switch support

Co-Authored-By: Alexander Babikov <2708460+lemondrops@users.noreply.github.com>
Co-Authored-By: cold-brewed <47337035+cold-brewed@users.noreply.github.com>

src/network/networkmessage.proto.txt

@@ -0,0 +1,38 @@
+syntax = "proto3";
+import "nanopb.proto";
+
+enum MessageType {
+    MESSAGE_TYPE_UNSPECIFIED = 0;
+    MESSAGE_TYPE_DATA = 1;
+    MESSAGE_TYPE_JOIN = 2;
+    MESSAGE_TYPE_LEAVE = 3;
+    MESSAGE_TYPE_KEEPALIVE = 4;
+    MESSAGE_TYPE_FRAGMENT = 5;
+    MESSAGE_TYPE_ACK = 6;
+    MESSAGE_TYPE_CONNECT_REQUEST = 7;
+    MESSAGE_TYPE_CONNECT_REPLY = 8;
+}
+
+message Fragment {
+    uint32 id = 1;
+    uint32 sequence = 2;
+    uint32 total = 3;
+}
+
+message Ack {
+    uint32 id = 1;
+    uint32 history = 2;
+}
+
+message NetworkMessage {
+    MessageType message_type = 1;
+    uint32 client_id = 2;
+    bytes mac = 3 [(nanopb).type = FT_POINTER];
+    bytes frame = 4 [(nanopb).type = FT_POINTER];
+    uint32 flags = 5;
+    uint32 version = 6;
+    Ack ack = 7;
+    Fragment fragment = 8;
+    int64 timestamp = 9;
+    uint32 sequence = 10;
+}