Configuration Cache fix for GenerateTask

[IgorDomagala]

Using typescript-plugin (v3.2.1263) with configuration cache enabled results in error:

type `cz.habarta.typescript.generator.gradle.GenerateTask`: cannot serialize object of type 'org.gradle.api.tasks.compile.JavaCompile', a subtype of 'org.gradle.api.Task', as these are not supported with the configuration cache.

and many more, mostly because GenerateTask uses variable "project" directly.

You can reproduce this error by running ./gradlew --configuration-cache --rerun-tasks assemble .

This pull request fixes it by changing way of class loading and getting classpath.
This PR also adds Gradle configuration cache test.

[vojtechhabarta]

This project currently supports Gradle version 5.6 but this PR is using Gradle 8. I think it is not reasonable to break compatibility for people who are still using older versions of Gradle. I would consider updating minimal Gradle version to 6.

[IgorDomagala]

I changed it to match your requirements ;)

[rouazana]

Hello, would you consider merging this PR?

[rouazana]

Hello @IgorDomagala

Thank you very much for your contribution!

After some testing it seems your PR is not compatible with customTypeMappings.

For example with this configuration

        customTypeMappings = listOf("com.hopwork.model.currency.CurrencyCode:CurrencyCode")
        customTypeAliases = listOf("CurrencyCode:string")

I get the following error:

Running TypeScriptGenerator version 3.2-SNAPSHOT-main-1006
Loading class javax.annotation.Nullable
Loading class com.hopwork.model.currency.CurrencyCode

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:generateTypeScript'.
> Failed to parse configured custom type mapping 'com.hopwork.model.currency.CurrencyCode:CurrencyCode': java.lang.ClassNotFoundException: com.hopwork.model.currency.CurrencyCode

Do you have an idea of what could cause this?