[JAVA] No maven wrapper in generated code - Feature Request

Description

I'm using swagger-codegen-gradle-plugin and swagger-codegen-cli:3.0.18 to generate a Java client for my project. I understand it is mentioned in the swagger readme to use mvn install to build the generated client but I don't want my users to have to separately install maven just for using the generated API client.

That is why I require a maven wrapper in the generated code so that the users can simply use ./mvnw install to build the generated code and not install maven separately. This also solves the problem of version conflicts with already installed maven for some users.

Swagger-codegen version

• io.swagger.codegen.v3:swagger-codegen-cli:3.0.18
• gradle.plugin.org.hidetake:gradle-swagger-generator-plugin:2.18.2
• io.swagger.core.v3:swagger-gradle-plugin:2.1.4

Related issues/PRs

This PR Adds a maven wrapper to the swagger-codegen project but not to the generated code.

Start by reviewing the generated Java client templates and the related pull request #7356, which adds a Maven wrapper to the main project but not generated code. Determine how generated files are assembled, then verify that a generated client includes the wrapper and can build with ./mvnw install without a separately installed Maven.