feat: add dir to outputs & do not checkout

- without it figuring out where it runs from is not easy
- do not call checkout

This is a breaking change for workflows that rely on this action for
the checkout

action.yml

@@ -65,6 +65,9 @@ inputs:
     description: 'Only install Forgejo and the Forgejo runner, do not launch them'
     default: 'false'
 outputs:
+  dir:
+    description: "Directory from which Forgejo and the runner are launched and configured"
+    value: "${{ steps.forgejo.outputs.dir }}"
   url:
     description: "URL of the Forgejo instance"
     value: "${{ steps.forgejo.outputs.url }}"
@@ -84,9 +87,6 @@ outputs:
 runs:
   using: "composite"
   steps:
-    - run: echo "${{ github.action_path }}" >> $GITHUB_PATH
-      shell: bash
-    - uses: actions/checkout@v4
     - id: forgejo
       run: |
         cd $(mktemp -d)
@@ -111,4 +111,8 @@ runs:
         echo token=$(cat forgejo-token) >> $GITHUB_OUTPUT
         echo runner-logs="$(pwd)/forgejo-runner.log" >> $GITHUB_OUTPUT
         echo runner-file="$(pwd)/.runner" >> $GITHUB_OUTPUT
+        echo dir="$(pwd)" >> $GITHUB_OUTPUT
+
+        echo "$(pwd)" >> $GITHUB_PATH
+        echo "${{ github.action_path }}" >> $GITHUB_PATH
       shell: bash