2.1.28, initiation update to PXT v5.28.24 (#54)

libs/radio-broadcast/pxt.json

@@ -0,0 +1,12 @@
+{
+    "name": "radio-broadcast",
+    "description": "Adds new blocks for message communication in the radio category",
+    "files": [
+        "pxt.json",
+        "radio-broadcast.ts"
+    ],
+    "dependencies": {
+        "core": "file:../core",
+        "radio": "file:../radio"
+    }
+}