Fix publish issue

Author: wangzw

pom.xml

@@ -28,4 +28,11 @@
         <module>grpc-rest-proxy-example</module>
     </modules>
 
+    <distributionManagement>
+        <repository>
+            <id>github</id>
+            <name>GitHub Packages</name>
+            <url>https://maven.pkg.github.com/wangzw/grpc-rest-proxy</url>
+        </repository>
+    </distributionManagement>
 </project>

settings.xml

@@ -0,0 +1,11 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+    <servers>
+        <server>
+            <id>github</id>
+            <username>${env.GITHUB_ACTOR}</username>
+            <password>${env.GITHUB_TOKEN}</password>
+        </server>
+    </servers>
+</settings>