Refactor controller

[honeyverma1]

This PR is aimed at solving the issue #3907

Summary

The issue states that the ReleaseController is oversized and is performing more activities than a REST controller actually should. Thus this PR is an attempt to reduce the functionality of the ReleaseController and to only handle REST APIs.

Functionalities shifted to another class
Primarily, 3 different functions were removed from the original functioin and has been shifted to new classes namely ReleaseRequestMapper which now implements the function setBackwardCompatibleFieldsInRelease(), and ReleaseModelAssembler which implements the function createHalReleaseResource() and createHalReleaseResourceWithAllDetails().
I have simply shifted all these functions to different classes and introduced 2 new dependencies in the original ReleaseController.

Issue:

Suggest Reviewer

@GMishx @rudra-superrr @akshitjoshii

Must I say I have very little knowledge regarding the licencing of a class, Both the new classes proposed contain the same licence as ReleaseController with the current year.

Please let me know if anything needs to change or if there is any issue with the proposed changes.
Thank you.

[GMishx]

@saad-mohammed1 , can you please help review and test this PR?

@honeyverma1 , this PR now has conflicts. Please rebase with latest main to avoid unnecessary commits and keep our history clean.

[honeyverma1]

rebase done. and the conflicts have also been resolved. please take a look

[saad-mohammed1]

Sure.. @GMishx!
Iam Testing this PR.