Requesting new configOption for JavaJAXRSS to generate or not both RestApplication.java and RestResourceRoot.java

Is your feature request related to a problem? Please describe.

I'm working on a project where i need to generate several swagger specs through different config :

<executions>
  <execution>
      <id>ex1</id>
      <goals>
          <goal>generate</goal>
      </goals>
      <configuration>
          <inputSpec>
              ${project.basedir}/spec1.yaml
          </inputSpec>
          <modelPackage>path1.api</modelPackage>
          <apiPackage>path1.model</apiPackage>
      </configuration>
  </execution>
<execution>
      <id>ex2</id>
      <goals>
          <goal>generate</goal>
      </goals>
      <configuration>
          <inputSpec>
              ${project.basedir}/spec2.yaml
          </inputSpec>
          <modelPackage>path2.api</modelPackage>
          <apiPackage>path2.model</apiPackage>
      </configuration>
  </execution>

Problem is that both execution generates RestApplication.java and RestResourceRoot.java (which are not useful to my project...) , and having multiple of those give me the following error at build :

java.lang.RuntimeException:
java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
[error]: Build step io.quarkus.resteasy.reactive.common.deployment.ResteasyReactiveCommonProcessor#handleApplication threw an exception: java.lang.RuntimeException: More than one Application class: [path1.RestApplication, path2.RestApplication]

Problem exists since https://github.com/OpenAPITools/openapi-generator/issues/17645

Describe the solution you'd like

Please introduce an new configOption (true by default to remain backward compatible) to enable generation of those files or not here :

https://github.com/OpenAPITools/openapi-generator/blame/master/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java#L178
https://github.com/OpenAPITools/openapi-generator/blame/master/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java#L187

Describe alternatives you've considered

Currently, as work-around, i have to delete the generated files after it has been generated
Example for people having the same issue :

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-antrun-plugin</artifactId>
	<version>1.7</version>
	<executions>
		<execution>
			<phase>generate-sources</phase>
			<goals>
				<goal>run</goal>
			</goals>
			<configuration>
				<tasks>
					<delete>
						<fileset dir="${project.build.directory}\path1\" includes="RestApplication.java"/>
						<fileset dir="${project.build.directory}\path1\" includes="RestResourceRoot.java"/>
						<fileset dir="${project.build.directory}\path2\" includes="RestApplication.java"/>
						<fileset dir="${project.build.directory}\path2\" includes="RestResourceRoot.java"/>
					</delete>
				</tasks>
			</configuration>
		</execution>
	</executions>
</plugin>

Start in modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java at the referenced lines, where RestApplication.java and RestResourceRoot.java generation is configured. Add an option that controls both files while preserving the default behavior, then verify that separate Maven executions can disable their generation without producing those files.