Revert "Removed reflection on Kotlin binding"

[gmazzo]

This partially reverts #101 to maximize the compatibility with complex build setups.

As per the general rule classpath should be consistent and interesting plugins should be added in the same classpath, there is a special use case we want to support:

Given the following structure:

• buildSrc/src/main/kotlin/my-constants.gradle.kts -> uses this plugin to create some constants
• build.gradle.kts -> applies my-constants and the koltin plugin.

Without this reflection logic, you'll be forced to promote the koltin plugin as well to the buildSrc classpath.

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (7017e60) 15.70% compared to head (ca38fae) 15.63%.

❗ Current head ca38fae differs from pull request most recent head e43360b. Consider uploading reports for the commit e43360b to get more accurate results

Files	Patch %	Lines
...zzo/buildconfig/internal/bindings/KotlinHandler.kt	0.00%	7 Missing ⚠️
...ig/internal/bindings/KotlinMultiplatformHandler.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #124      +/-   ##
============================================
- Coverage     15.70%   15.63%   -0.08%     
  Complexity       13       13              
============================================
  Files            19       19              
  Lines           643      646       +3     
  Branches        171      171              
============================================
  Hits            101      101              
- Misses          525      528       +3     
  Partials         17       17              

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