UHF-10349: Restructuring code

[jeremysteerio]

UHF-10349

Move conversion functions from GrantsHandler into their own helper class.

What was done

• Added new class ConversionHelpers
• Moved conversion functions from GrantsHandler to ConversionHelpers
• Fixed all references to moved functions

How to install

• Make sure your instance is up and running on correct branch.
  • git checkout UHF-10349
  • make fresh
• Run make drush-cr

How to test

• Try to produce any calls to moved GrantsHandler functions using grep or similar (you shouldn't find any)
• Try filling a couple of applications and sending them
• If you encounter any errors, check docker compose logs app -f|grep error to see what is up
• Check that code follows our standards

Designers review

• This PR does not need designers review
• [] This PR has been visually reviewed by a designer (Name of the designer)

Automatic- / Regression tests

• This PR makes no changes that effects any tests. (This will be caught in automatic testing later on, but please, please run regression tests always on PR before asking for a review)
• This PR passes regression tests. (make test-pw)

[sonarqubecloud]

Quality Gate failed

Failed conditions
56.8% Duplication on New Code (required ≤ 30%)

See analysis details on SonarQube Cloud