Add drone config

.drone.yml

@@ -0,0 +1,54 @@
+kind: pipeline
+name: default
+type: docker
+steps:
+  - name: build module
+    image: glmdev/node-pnpm:latest
+    commands:
+      - pnpm i
+      - pnpm build
+      - tar czf build.tar.gz lib
+
+  - name: send build success notifications
+    image: plugins/webhook
+    settings:
+      urls:
+        from_secret: notify_webhook_url
+      content_type: application/json
+      template: |
+        {
+          "title": "Drone-CI [extollo/lib @ ${DRONE_BUILD_NUMBER}]",
+          "message": "Build completed successfully.",
+          "priority": 4
+        }
+    when:
+      status: success
+
+  - name: send build error notifications
+    image: plugins/webhook
+    settings:
+      urls:
+        from_secret: notify_webhook_url
+      content_type: application/json
+      template: |
+        {
+          "title": "Drone-CI [extollo/lib @ ${DRONE_BUILD_NUMBER}]",
+          "message": "Build failed!",
+          "priority": 6
+        }
+    when:
+      status: failure
+
+  - name: trigger documentation build
+    image: plugins/downstream
+    settings:
+      server: https://ci.garrettmills.dev
+      token:
+        from_secret: drone_token
+      fork: false
+      last_successful: true
+      deploy: production
+      repositories:
+        - Extollo/docs@master
+    when:
+      status: success