Format codegen from long named preview parameter provider so it compiles

[oas004]

Thanks for an awesome library! I really like this! Good job! 😃 🤩

I found that if you have a long named preview parameter provider, the code that was generated was not formatted correctly and resulting in a compile error. Before, the lambda would start the bracket on the next line and it would not compile. Now, I have the lambda start on the next line and formatted the line. I think this should fix #192 also :)

Before

MyProvider().values.iterator.asSequence.forEachIndexed
{ index, previewParam ->

Now

MyProvider()
    .values
    .iterator
    .asSequence.forEachIndexed { index, previewParam ->

I have added a test for this as well in the :showkase-processor-testing module. Is that enough?

[oas004]

@vinaygaba Rebased and fixed tests according to #238 😄

[vinaygaba]

Fantastic improvement. Apologize for the delay in reviewing it. Really grateful for all the contributions you've made lately ❤️