GitHub workflow for linting and syntax checks (#241)

.github/workflows/prettier.yml

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+name: Prettier Linter check
+
+on:
+  push:
+  pull_request:
+    branches: [master]
+
+jobs:
+  prettier:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '18'
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Run Prettier
+        run: yarn prettier --check .

.github/workflows/typescript_check.yml

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+name: TypeScript Syntax Error Check
+
+on:
+  push:
+  pull_request:
+    branches: [master]
+
+jobs:
+  typescript:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '18'
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Run TypeScript Check
+        run: yarn tsc --noEmit