Setup Continuous Integration using GitHub Actions

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The plugin skeleton workflow uses the following, which I think will test against the default branch, so main. The reusable workflow has an optional core_ref input and as far as I can tell, without it the discourse/discourse repository’s default branch will get checked out.

jobs:
  ci:
    uses: discourse/.github/.github/workflows/discourse-plugin.yml@v1

I can’t say whether that actually limits it to testing against main or not but if it does, you could add a matrix strategy to run once for each ref you want to test against.

jobs:
  ci:
    strategy:
      matrix:
        target: [tests-passed, stable]
    uses: discourse/.github/.github/workflows/discourse-plugin.yml@v1
    with:
      core_ref: ${{ matrix.target }}
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