feat: support optional custom Referer per-channel (PR: #46)

* feat: support optional custom Referer per-channel

* Fixed minor formatting in config/channels.go

Author: shaanchander

config/channels.go

@@ -25,7 +25,8 @@ type Channel struct {
 
 	// UserAgent is a custom UA string that will be used by FFMPEG to make requests to the stream URL.
 	UserAgent        *string `json:"userAgent,omitempty"`
-    Icon             *string      `json:"icon,omitempty"`
+    Referer          *string `json:"referer,omitempty"`
+    Icon             *string `json:"icon,omitempty"`
 }
 
 var (

routes/stream.go

@@ -47,6 +47,14 @@ func Stream(c *gin.Context) {
 		)
 	}
 
+	if channel.Referer != nil {
+		ffmpegArgs = append(
+			ffmpegArgs,
+			"-headers",
+			fmt.Sprintf("Referer: %s", *channel.Referer),
+		)
+	}
+
 	switch config.Cfg.GetEncoderProfile() {
 	case config.EncoderProfileVAAPI:
 		ffmpegArgs = append(