Create workflow to publish new releases to Maven Central

Author: JcMinarro

.github/workflows/publish.yml

@@ -0,0 +1,31 @@
+name: Publish
+
+on:
+    release:
+        types: [released]
+
+jobs:
+    publish:
+        name: Release build and publish
+        runs-on: ubuntu-latest
+        steps:
+            - name: Check out code
+              uses: actions/checkout@v2
+            - name: Set up JDK 11
+              uses: actions/setup-java@v2
+              with:
+                  distribution: adopt
+                  java-version: 11
+            - name: Release build
+              run: ./gradlew assemble --scan
+            - name: Source jar and dokka
+              run: ./gradlew androidSourcesJar javadocJar --scan
+            - name: Publish to MavenCentral
+              run: ./gradlew publishReleasePublicationToSonatypeRepository --max-workers 1 closeAndReleaseSonatypeStagingRepository --scan
+              env:
+                  OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+                  OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+                  SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY_ID }}
+                  SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
+                  SIGNING_KEY: ${{ secrets.SIGNING_KEY }}
+                  SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }}