feat: enableTcc, enableRemb, minParticipants.

config.js

     // Disables or enables RTX (RFC 4588) (defaults to false).
     // disableRtx: false,
 
+    // Disables or enables TCC (the default is in Jicofo and set to true)
+    // (draft-holmer-rmcat-transport-wide-cc-extensions-01). This setting
+    // affects congestion control, it practically enables send-side bandwidth
+    // estimations.
+    // enableTcc: true,
+
+    // Disables or enables REMB (the default is in Jicofo and set to false)
+    // (draft-alvestrand-rmcat-remb-03). This setting affects congestion
+    // control, it practically enables recv-side bandwidth estimations. When
+    // both TCC and REMB are enabled, TCC takes precedence. When both are
+    // disabled, then bandwidth estimations are disabled.
+    // enableRemb: false,
+
+    // Defines the minimum number of participants to start a call (the default
+    // is set in Jicofo and set to 2).
+    // minParticipants: 2,
+
     // Use XEP-0215 to fetch STUN and TURN servers.
     // useStunTurn: true,