chore: add actions to format and lint the code

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+# This is a basic workflow to help you get started with Actions
+
+name: lint
+
+# Controls when the action will run. 
+on: [push, pull_request]
+
+# 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"
+  luacheck:
+    name: Luacheck
+    # The type of runner that the job will run on
+    runs-on: ubuntu-20.04
+
+    # 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
+
+      # Runs a single command using the runners shell
+      - name: Prepare
+        run: |
+          sudo apt-get update
+          sudo apt-get install luarocks
+          sudo luarocks install luacheck
+
+      - name: Lint
+        run: sudo make lint

.github/workflows/stylua_check.yml

@@ -0,0 +1,20 @@
+name: lint
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: 
+      - "**"
+  push:
+    branches:
+      - "**"
+jobs:
+  stylua:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: JohnnyMorganz/stylua-action@1.0.0
+        with:
+          token: ${{ secrets.GH_TOKEN }}
+          # CLI arguments
+          args: --check --config-path stylua.toml --glob 'lua/**/*.lua' -- lua
+          # Specify `version` to pin a specific version, otherwise action will always use latest version/automatically update