[REQ] [MVN] Support for generateMetadata option for maven plugin

[unalpolat]

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

Faced .openapi-genarator/FILES and .openapi-generator/VERSION files when generate in openapi-yaml language with maven-plugin.

In order to skip above files generation, generateMetadata option is available in DefaultGenerator class (

openapi-generator/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java

Line 93 in 8a426b2

private Boolean generateMetadata = true;

). However, there is no option in related maven plugin CodegenMojo. Therefore, .openapi-genarator/FILES and .openapi-generator/VERSION files could not be skipped when generating in any language -except setting generateSupportingFiles to false-.

Describe the solution you'd like

By adding generateMetadata option to maven plugin CodegenMojo, we can easily skip the generation of FILES and VERSION files.