Reworked protocol to fit new simplified approch (first rough concept)

backend.proto

@@ -0,0 +1,40 @@
+syntax = "proto3";
+
+package ledd;
+
+message Backend {
+    int32 channel = 3;
+    string name = 4;
+    string type = 5;
+    string version = 6;
+    int32 resolution = 7;
+
+    map<string, string> options = 10;
+}
+
+message BackendSetAll {
+    int32 value = 1;
+}
+
+message BackendSetLocalDirect {
+    int32 channel = 1;
+    int32 value = 2;
+}
+
+message BackendLEDOptions {
+    map<string, string> options = 1;
+}
+
+message BackendSetChannel {
+    map <int32, int32> new_channel_values = 1;
+}
+
+message BackendWrapperMessage {
+    oneof msg {
+        Backend m_backend = 2;
+        BackendSetAll m_set_all = 3;
+        BackendSetLocalDirect m_set_local_direct = 4;
+        BackendLEDOptions m_options = 5;
+        BackendSetChannel m_set_channel = 6;
+    }
+}