Add version attribute as action output (#16)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

README.md

@@ -76,6 +76,7 @@ The Action provides the following information as output:
 |     `slug`      |                The configured add-on slug.                |
 |    `target`     |                 The add-on target folder.                 |
 |     `image`     |             The Image-template of the add-on.             |
+|    `version`    |                The version of the add-on.                 |
 
 ## Changelog & Releases
 

action.yaml

@@ -49,6 +49,9 @@ outputs:
   image:
     description: Image-template of the add-on
     value: ${{ steps.find.outputs.basic.image }}
+  version:
+    description: Returns the version of the add-on
+    value: ${{ steps.find.outputs.basic.version }}
 
 runs:
   using: "composite"
@@ -101,6 +104,9 @@ runs:
         image=$(jq --raw-output '.image // empty' "${{ steps.find.outputs.config }}")
         echo "::set-output name=image::${image}"
 
+        version=$(jq --raw-output '.version' "${{ steps.find.outputs.config }}")
+        echo "::set-output name=version::${version}"
+
     - name: ℹ️ Extract add-on architecture information
       shell: bash
       id: architectures