fix: 修复assets在example app中不能使用的问题 & 加入maven local的链接，修复flutter无法打包 aar的问题

example/android/build.gradle.kts

@@ -1,5 +1,11 @@
 allprojects {
     repositories {
+        val mavenLocalPath = rootProject.file("../../android/mavenLocal")
+        println("Maven local path: ${mavenLocalPath.absolutePath}")
+        println("Maven local exists: ${mavenLocalPath.exists()}")
+
+        maven { url = uri(mavenLocalPath) }
+
         maven { url = uri("https://maven.aliyun.com/repository/public") }
         maven { url = uri("https://maven.aliyun.com/repository/google") }
         maven { url = uri("https://maven.aliyun.com/repository/gradle-plugin") }