BLE HF2 log service (#1549)

* basic hf2 service

* service to send hf2 log messages

* use common console.log

* updated shims

* adding config

* adding simulator

* fix hf2 logging

* hide console blocks

libs/core/shims.d.ts

@@ -440,6 +440,12 @@ declare namespace control {
      */
     //% part=midioutput blockHidden=1 shim=control::__midiSend
     function __midiSend(buffer: Buffer): void;
+
+    /**
+     *
+     */
+    //% shim=control::__log
+    function __log(text: string): void;
 }