Add publish configuration

.semaphore/publish.yml

@@ -0,0 +1,29 @@
+version: v1.0
+name: Publish
+blocks:
+  - name: Publish
+    task:
+      jobs:
+        - name: NPM publish
+          commands:
+            - checkout
+            - git submodule init
+            - git submodule update
+            - 'wget https://dl.google.com/android/repository/commandlinetools-linux-6514223_latest.zip -O ~/android-commandline-tools.zip '
+            - mkdir -p ~/android-sdk/cmdline-tools/
+            - unzip ~/android-commandline-tools.zip -d ~/android-sdk/cmdline-tools
+            - 'export PATH=$PATH:~/android-sdk/cmdline-tools/tools/bin'
+            - yes | sdkmanager "ndk;21.3.6528147"
+            - 'export PATH=$PATH:~/android-sdk/ndk/21.3.6528147/'
+            - sem-version node 12
+            - cache restore
+            - npm install
+            - cache store
+            - npm install
+            - npm publish --access public
+      secrets:
+        - name: npmjs
+agent:
+  machine:
+    type: e1-standard-2
+    os_image: ubuntu1804

.semaphore/semaphore.yml

@@ -25,3 +25,8 @@ blocks:
             - cache store
             - npm run build --if-present
             - npm test
+promotions:
+  - name: NPM publish
+    pipeline_file: publish.yml
+    auto_promote:
+      when: (branch = 'master' OR tag =~ '.*') AND result = 'passed'