Add CI, Linter and CodeQL actions

Author: hlxid

.github/workflows/ci.yaml

@@ -0,0 +1,17 @@
+name: CI
+
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v2
+      with: 
+        node-version: 15
+
+    - name: Install nodejs dependencies
+      run: npm ci
+
+    - name: Build TS
+      run: npm run build

.github/workflows/codeql.yaml

@@ -0,0 +1,35 @@
+# Default configuration as generated by the github ui (security -> code scanning -> setup) (minus unneeded stuff like autobuild)
+name: "CodeQL"
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches: 
+    - master
+  schedule:
+    - cron: "28 22 * * 3"
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["javascript"]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+        queries: +security-and-quality
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/lint.yaml

@@ -0,0 +1,18 @@
+name: Linter
+
+on: pull_request
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - uses: actions/setup-node@v2
+      with: 
+        node-version: 15
+
+    - name: Install dependencies
+      run: npm i
+
+    - name: Run ESLint
+      run: npm run lint