Add semantic-release

Author: ExtremTechniker

.github/workflows/release.yml

@@ -0,0 +1,23 @@
+name: Release
+on:
+  push:
+    branches:
+      - master
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - name: Install dependencies
+        run: npm ci
+      - name: Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npx semantic-release

.npmignore

@@ -0,0 +1,3 @@
+.devcontainer/
+.github/
+nodecg/

.releaserc

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+{
+    "branches": [
+        "master"
+    ]
+}