rest-sample-dubbo-provider 0.4.0

0.4.0 updates the provider sample to the declarative Dubbo binding line.

What's New

Uses java-rust-dubbo:0.5.0 and rest-sample-utility:0.3.0.
Uses DubboServiceBinding to register service implementations with explicit interface and method
capacity limits.
Uses generated JDBC record mappers in database profiles.
Keeps catalog-static, database-query, and full provider shapes as separate Maven profiles.
Keeps provider service interfaces and payload contracts unchanged.

mvn clean package
java -jar target/rest-sample-dubbo-provider-0.4.0.jar

Provider business implementations, SQL, transactions, and validation remain explicit Java code.