[CO-422] Making branch compile and cherry-picking of CO-427

[paweljakubas]

Description

1. Make branch compiling
2. Resolving cherry-picking conflicts with some further refactoring decoupling from old wallet

• relocate eskToWalletDecrCredentials to wallet-new/src/Cardano/Wallet/Kernel/Decrypt.hs and drop importing Pos.Wallet.Web.Tracking.Decrypt (eskToWalletDecrCredentials)

Linked issue

https://iohk.myjetbrains.com/youtrack/issue/CO-422

Type of change

• 🐞 Bug fix (non-breaking change which fixes an issue)
• 🛠 New feature (non-breaking change which adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)
• 🏭 Refactoring that does not change existing functionality but does improve things like code readability, structure etc
• 🔨 New or improved tests for existing code
• ⛑ git-flow chore (backport, hotfix, etc)

Developer checklist

• I have read the style guide document, and my code follows the code style of this project.
• If my code deals with exceptions, it follows the guidelines.
• I have updated any documentation accordingly, if needed. Documentation changes can be reflected in opening a PR on cardanodocs.com, amending the inline Haddock comments, any relevant README file or one of the document listed in the docs directory.
• CHANGELOG entry has been added and is linked to the correct PR on GitHub.

Testing checklist

• I have added tests to cover my changes.
• All new and existing tests passed.

QA Steps

Screenshots (if available)

[KtorZ]

I have rebased TheGreatCleanup using your changes; thanks @paweljakubas. We'll have to get CO-372/TheGreatCleanup merged into develop ASAP