add GitHub action on pushing to run lint (#224)

* Add script to run eslint for the project

* Add GitHub Action for linting

Prevent merges with linting errors

* Rename GitHub Action "build_push" to "build_push_master"

.github/workflows/build_push_all.yml

@@ -0,0 +1,11 @@
+name: Lint
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install modules
+        run: yarn
+      - name: Run ESLint
+        run: yarn lint

package.json

@@ -32,7 +32,8 @@
     "build-md5": "find build -type f | sort | xargs md5sum | awk '{ print $1 }' | tr -d '\n' | md5sum| awk '{ print $1 }' > buildZip/md5sum ",
     "build-zip": "cd build && rev=$(git rev-list HEAD --count) && echo r$rev > revision && zip -9 -r ../buildZip/Tachidesk-WebUI-r$rev *",
     "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "eject": "react-scripts eject",
+    "lint": "eslint src --ext .ts,.tsx,.js,.jsx"
   },
   "browserslist": {
     "production": [