first radio namespace docs

docs/reference/radio.md

@@ -0,0 +1,17 @@
+# Radio
+
+
+
+
+```cards
+radio.sendNumber(0);
+radio.sendNumbers(0, 0, 0, 0);
+radio.onDataReceived(() => {
+    
+});
+radio.receiveNumber();
+radio.receivedNumberAt(0);
+radio.receivedSignalStrength();
+radio.setGroup(0);
+radio.setTransmitPower(0);
+```