Add free-space step

Author: athornton

.github/workflows/build.yaml

@@ -49,6 +49,11 @@ on:
         required: false
         type: number
         default: 1
+      free-space:
+        description: "Free space on GitHub runner."
+        required: false
+        type: boolean
+        default: false
     outputs:
       tag:
         description: "The tag that was used for the built image"
@@ -80,6 +85,15 @@ jobs:
     outputs:
       tag: ${{ steps.tag.outputs.tag }}
     steps:
+      - name: Free space
+        if: ${{ inputs.free-space }}
+        uses: easimon/maximize-build-space@v10
+        with:
+          remove-dotnet: 'true'
+          remove-android: 'true'
+          remove-haskell: 'true'
+          remove-codeql: 'true'
+
       - name: Checkout source
         uses: actions/checkout@v5
         with: