Migrate to compiler options DSL in extension which also applied to shared source sets

[KotlinBuild]

No description provided.

[Tapchicoma]

It is strange to configure extension within the task. I would propose to add compilerOptions DSL upper in the script where kotlin { extension is being configured (line 27):

kotlin {
   compilerOptions {
          // These configuration replaces 'languageSettings' config on line 67
          progressiveMode.set(true)
          optIn.addAll(
                listOf(
                   "kotlin.ExperimentalMultiplatform",
                   "kotlin.ExperimentalSubclassOptIn",
                   "kotlinx.serialization.InternalSerializationApi",
                   "kotlinx.serialization.SealedSerializationApi",
                )
           )
          if (overriddenLanguageVersion != null) {
              languageVersion = KotlinVersion.fromVersion(overriddenLanguageVersion!!)
              freeCompilerArgs.add("-Xsuppress-version-warnings")
          }
    }
    ...

[sandwwraith]

@Tapchicoma @tbogdanova any updates?

[sandwwraith]

Closing in favor of #2891