Create github actions

.github/workflows/build.yml

@@ -0,0 +1,21 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: Build and test
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@master
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+
+      - name: Install
+        run: yarn --frozen-lockfile --non-interactive
+
+      - name: Test
+        run: yarn test

.github/workflows/release.yml

@@ -0,0 +1,34 @@
+name: Release
+
+on:
+  push:
+    tags: v*
+
+jobs:
+  release:
+    name: Release workflow
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@master
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+
+      - name: Install
+        run: yarn --frozen-lockfile --non-interactive
+
+      - name: Publish latest
+        if: "!contains(github.ref, '-')"
+        run:
+          - npm publish --tag latest --dry-run
+          - npm dist-tag rm thelounge-theme-solarized next || true
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NODE_AUTH_TOKEN }}
+
+      - name: Publish next
+        if: contains(github.ref, '-')
+        run: npm publish --tag next --dry-run
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NODE_AUTH_TOKEN }}