run luacheck on pull requests

.github/workflows/CI.yml

@@ -0,0 +1,29 @@
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the develop branch
+on:
+  push:
+    branches: [ develop ]
+  pull_request:
+    branches: [ develop ]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - uses: actions/checkout@v2
+
+    # Use "Factorio Mod luacheck" from the marketplace
+    - name: Factorio Mod luacheck
+      uses: Roang-zero1/factorio-mod-luacheck@v1.1.0
+      with:
+          # URL to the luacheckrc configuration file to be used during checking.
+          # Per https://github.com/Roang-zero1/factorio-mod-luacheck/issues/2 - an empty string will use the project's .luacheckrc
+          luacheckrc_url: "" # optional, default is https://raw.githubusercontent.com/Nexela/Factorio-luacheckrc/0.17/.luacheckrc