UI. Code generation language. Set default to the analyzed class language

[alisevych]

Description

Suggestion: Set default Code generation language to the language on which the analyzed class is written.

Expected behavior

If Test generation is called for a Java class or a Java package - set default Code generation language to Java.
If Test generation is called for a Kotlin class or a Kotlin package - set default Code generation language to Kotlin.
Other language is also available.

Environment

IntelliJ IDEA
Projects with Kotlin and Java classes

Potential alternatives

Now the default Code generation language is Java.

We can remember the previous User's choice and suggest it.