chore: add dependency manager for Kotlin

[jonaslagoni]

Description
This PR adds the final piece to the puzzle (before releasing the feature) and adds the dependency manager to Kotlin.

This is a core Modelina feature replicated across all generators that enables a few things.

1. It lets users add dependencies for models during the constraint phase, i.e. solving: Allow customizing of type mappings in renderers #546 (comment)
2. It enables greater separation of logic for handling dependencies within one specific file instead of it being part of the renderer.
3. Subsequently the architecture enables greater precision of rendering models where we now have 3 different levels of options: https://github.com/asyncapi/modelina/pull/1063/files#diff-72376d0b487d7231cf31959bf266f6aea098e899743bae02e36d176cef4db476

@LouisXhaferi like the rest of the champions, it's up to you to decide how involved you want to be with the core Modelina changes, it's perfectly fine to say you don't want to invest the time into reviewing these types of changes, just let us know ASAP so another core champion can review it 🙂 Otherwise, by default I assume you want to review it 🙂

[LouisXhaferi]

Hey @jonaslagoni 👋🏻
I'll look at core topics as well and see how it fares! Will look at this PR in a couple of hours 🙏🏻

[LouisXhaferi]

Cool feature 👍🏻
lgtm, if you clean up the couple unused imports and declarations.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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