REMS-292 add linting and ci workflows to repository

.eslintrc

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+{
+  "parser": "@typescript-eslint/parser",
+  "extends": [
+    "plugin:@typescript-eslint/recommended",
+    "prettier"
+  ],
+  "parserOptions": {
+    "ecmaVersion": 2018,
+    "sourceType": "module"
+  },
+  "rules": {
+    "semi": ["error", "always"],
+    "quotes": ["error", "single", { "avoidEscape": true }],
+    "@typescript-eslint/ban-ts-comment": "off",
+    "@typescript-eslint/explicit-function-return-type": "off",
+    "@typescript-eslint/no-empty-function": "off",
+    "@typescript-eslint/no-explicit-any": "off",
+  }
+}

.github/workflows/ci-workflow.yml

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+name: Lint and Test
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    name: Check tsc, lint, and prettier
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-node@v1
+      with:
+        node-version: '12.x'
+    - run: npm install
+    - run: npm run lint
+    - run: npm run prettier
+      env:
+        CI: true
+  test:
+    name: Test on node ${{ matrix.node-version }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [12]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install
+    - run: npm test
+      env:
+        CI: true

.prettierrc

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+{
+  "trailingComma": "none",
+  "arrowParens": "avoid",
+  "endOfLine": "auto",
+  "printWidth": 100,
+  "tabWidth": 2,
+  "singleQuote": true
+}