Add RTMPIngress protobuf model for RTMP stream metadata

Author: sachaarbonel

protobuf/video/sfu/models/models.proto

@@ -269,6 +269,21 @@ message Browser {
   string version = 2;
 }
 
+message RTMPIngress {
+  // Video dimensions and frame rate
+  uint32 width = 1;
+  uint32 height = 2;
+  double frame_rate = 3;
+
+  // Client info
+  string software = 4;  // e.g. "obs-studio"
+  string version = 5;   // e.g. "29.1.3"
+  string encoder = 6;   // e.g. "x264" or "NVIDIA NVENC"
+
+  // Connection info
+  string remote_addr = 7;
+}
+
 message Device {
   string name = 1;
   string version = 2;

protobuf/video/sfu/signal_rpc/signal.proto

@@ -79,6 +79,7 @@ message SendStatsRequest {
   }
 
   Telemetry telemetry = 11;
+  models.RTMPIngress rtmp = 12;
 }
 
 message SendStatsResponse {