Add lint-staged and update GitHub Actions (#28)

Author: pcothenet

.github/workflows/health_check.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Setup Node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node }}
 

.github/workflows/publish.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: 12
           registry-url: https://registry.npmjs.org/

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Setup Node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node }}
       - name: Install Node Modules

.gitignore

@@ -3,3 +3,6 @@
 .openapi-generator-ignore
 dist
 node_modules
+
+# OS artifacts
+.DS_Store