Refactoring

[ivanshterev18]

Description

• Exported api calls to the app/api folder
• Exported collection module from the nft module
• Exported LoadingPopup from marketplace module to shared components
• Deleted unused imports
• Removed SelectedFilters component because its not used anywhere

Related Issue

• https://app.shortcut.com/universexyz/story/4059/marketplace-folders-files-restructuring

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #4059: Marketplace folders & files restructuring.

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