[misc] Add github action for frontend

.github/workflows/backend.yml

@@ -1,6 +1,11 @@
-name: Python package
+name: Python Backend
 
-on: [push, pull_request]
+on:
+  push:
+    paths:
+      - "kibicara/**"
+      - "tests/**"
+  pull_request:
 
 jobs:
   build:

.github/workflows/frontend.yml

@@ -0,0 +1,37 @@
+name: Angular Frontend
+
+on:
+  push:
+    paths:
+      - "kibicara-frontend/**"
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    env:
+      working-directory: ./kibicara-frontend
+
+    strategy:
+      matrix:
+        node-version: [12.x]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install Packages
+        run: npm i
+        working-directory: ${{env.working-directory}}
+
+      - name: Install Angular CLI
+        run: npm i -g @angular/cli
+        working-directory: ${{env.working-directory}}
+
+      - name: Run Linter
+        run: ng lint
+        working-directory: ${{env.working-directory}}