添加Android端的gradle构建脚本

build.gradle

+apply plugin: 'java-library'
+
+group 'com.virjar'
+version '1.0-SNAPSHOT'
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    api 'io.netty:netty-codec:4.0.44.Final'
+    api 'io.netty:netty-handler:4.0.44.Final'
+
+    compileOnly 'org.slf4j:slf4j-api:1.7.25'
+    compileOnly 'com.google.android:android:4.1.1.4'
+    compileOnly 'com.android.support:support-annotations:28.0.0'
+}
+