[REQ] Feature Request Description

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

I am running a SpringBoot App with Groovy. So basically all my code is Groovy and Gradle must be above 6.8.x for recent versions, so I decided to go with Gradle 7.0.2
Now I also need to run ClientSide code for another open API. For this I use the gradle plugin. Generation works good. But the generated build.gradle has some flaws. It wants to run a wrapper task, which is not recommended in gradle subrojects afaik. And I am running it as a subproject as part of my overall App. What I want to achieve is, that the generated sources will be accisble directly in my spring boot app.
Right now I am able to generate, then I need to remove the wrapper task, and also convert compile to implementation, since compile is removed from latest Gradle version already.

I achieve this by running the generator like this:

task openApiGroovy(type: org.openapitools.generator.gradle.plugin.tasks.GenerateTask, dependsOn: [':downloadApiJson']) {
    generatorName = "groovy"
    inputSpec = "$buildDir/generated/strava-api-definition/api.json"
    outputDir = "${project.getRootDir().absolutePath}/src-api"
    validateSpec = false

    // workaround, generated build.gradle is not working
    doLast {
        new File("${project.getRootDir().absolutePath}/src-api", "build.gradle").text = '''
apply plugin: 'groovy'
apply plugin: 'idea'
apply plugin: 'eclipse'

group = 'org.openapitools'
version = '3.0.0'
archivesBaseName = 'openapi-gen-groovy'

buildscript {
    repositories {
        maven { url "https://repo1.maven.org/maven2" }
        maven { url = 'https://repo.jfrog.org/artifactory/gradle-plugins' }
    }
    dependencies {
        classpath(group: 'org.jfrog.buildinfo', name: 'build-info-extractor-gradle', version: '2.0.16')
    }
}

repositories {
    maven { url "https://repo1.maven.org/maven2" }
    mavenLocal()
}

ext {
    swagger_annotations_version = "1.5.22"
    jackson_version = "2.9.10"
    jackson_databind_version = "2.9.10.8"
}

dependencies {
    implementation 'org.codehaus.groovy:groovy-all:2.5.14'
    implementation "io.swagger:swagger-annotations:$swagger_annotations_version"
    implementation "com.fasterxml.jackson.core:jackson-core:$jackson_version"
    implementation "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
    implementation "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
    implementation "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version"
    implementation "com.fasterxml.jackson.datatype:jackson-datatype-joda:$jackson_version"
    implementation 'io.github.http-builder-ng:http-builder-ng-core:1.0.3'
    testImplementation "junit:junit:4.13"
}
'''
    }
}

Describe the solution you'd like

Would be nice if I could specify a Gradle version which would then create new dependency lines based on the version.
Furthermore the wrapper task should be optionally able to turn off: in case its used as subproject.

Guess it needs some configurations: https://github.com/besessener/openapi-generator/commit/257630eefae8856cee80afe0d9b1a8a4b9e80518

Describe alternatives you've considered

nothing sorry.

Additional context

Full gradle file: https://github.com/besessener/StravaActivityMerger/blob/master/build.gradle

Start with the generated build.gradle produced by the Gradle plugin's GenerateTask, then compare it with the linked full build.gradle and referenced commit. Define how a requested Gradle version affects generated dependency configurations and how wrapper generation can be disabled for subprojects; done means the generated project works without manual edits on the target Gradle version.