Add CI

.github/CODEOWNERS

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+* @prelude-music/maintainers

.github/dependabot.yml

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+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "npm" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+    reviewers:
+      - "prelude-music/maintainers"

.github/workflows/build.yml

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+name: Build
+on:
+  pull_request:
+    types: [ opened, synchronize, reopened ]
+  push:
+    branches:
+      - "main"
+jobs:
+  build:
+    name: "Build with Node.js v${{ matrix.node }}"
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        node:
+          - 20
+    steps:
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "${{ matrix.node }}"
+      - uses: actions/checkout@v4
+      - name: "Cache node_modules"
+        uses: actions/cache@v4
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-v${{ matrix.node }}-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-v${{ matrix.node }}-
+      - name: Install Dependencies
+        run: npm install
+      - name: Build
+        run: npm run build