Extension: add button-clicks (#4842)

* Extension: add button-clicks

* Removing from the old section

Co-authored-by: Abhijith Chatra <abchatra@microsoft.com>

docs/extensions.md

@@ -876,6 +876,10 @@ Check out [the accessories pages on microbit.org](https://microbit.org/buy/acces
 ## Utilities
 ```codecard
 [{
+  "name": "Button clicks",
+  "url": "/pkg/bsiever/microbit-pxt-clicks",
+  "cardType": "package"
+}, {
   "name": "Rotate Display",
   "url":"/pkg/bsiever/microbit-pxt-rotate",
   "cardType": "package"

targetconfig.json

@@ -769,6 +769,7 @@
             "joy-it/pxt-rfid-mfrc522": { "tags": [ "Individual sensors" ] },
             "dfrobot/pxt-dfrobot_iot_cloud_kit": { "tags": [ "Networking" ] },
             "plenprojectcompany/pxt-plenbit_full": { "tags": [ "Robotics" ] },
+            "bsiever/microbit-pxt-clicks": { "tags": [ "Software" ] },
             "joy-it/pxt-ads1115": { "tags": [ "Individual sensors" ] },
             "bsiever/microbit-pxt-rotate": { "tags": [ "Software" ] }
         },