Maven: migrate to Central Publishing Portal, add release instructions

Author: UweTrottmann

RELEASING.md

@@ -0,0 +1,15 @@
+# Releasing tmdb-java to Maven Central
+
+## Local testing
+
+```bash
+./mwnw clean install -P release,heyuwe-sign
+```
+
+## Preparing a release and deploying it to Maven Central
+
+```bash
+./mvnw release:prepare
+
+./mvnw release:perform
+```

pom.xml

@@ -94,13 +94,6 @@
         </dependency>
     </dependencies>
 
-    <distributionManagement>
-        <snapshotRepository>
-            <id>ossrh</id>
-            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
-        </snapshotRepository>
-    </distributionManagement>
-
     <build>
         <plugins>
             <plugin>
@@ -146,7 +139,7 @@
                     <arguments>-Dmaven.test.skip=true</arguments>
                     <localCheckout>true</localCheckout>
                     <pushChanges>false</pushChanges>
-                    <releaseProfiles>release</releaseProfiles>
+                    <releaseProfiles>release,heyuwe-sign</releaseProfiles>
                     <tagNameFormat>v@{project.version}</tagNameFormat>
                 </configuration>
             </plugin>
@@ -162,14 +155,14 @@
                 <version>2.18.0</version>
             </plugin>
             <plugin>
-                <groupId>org.sonatype.plugins</groupId>
-                <artifactId>nexus-staging-maven-plugin</artifactId>
-                <version>1.7.0</version>
+                <groupId>org.sonatype.central</groupId>
+                <artifactId>central-publishing-maven-plugin</artifactId>
+                <version>0.8.0</version>
                 <extensions>true</extensions>
                 <configuration>
-                    <serverId>ossrh</serverId>
-                    <nexusUrl>https://oss.sonatype.org/</nexusUrl>
-                    <autoReleaseAfterClose>true</autoReleaseAfterClose>
+                    <publishingServerId>uwe-central</publishingServerId>
+                    <autoPublish>true</autoPublish>
+                    <waitUntil>published</waitUntil>
                 </configuration>
             </plugin>
         </plugins>