[DX-3550] refactor: marketplace package to use static functions for generating urls

[nattb8]

Summary

• Refactored the Marketplace package to align with the Unreal SDK. Replaced the class-based URL generation with static functions for on-ramp, swap, and bridge flows, simplifying the process for developers.
• Updated the GitHub Action workflow to accurately copy sample scenes and scripts for the Passport and Marketplace packages.

Customer Impact

Simplifies the generation of on-ramp, swap, and bridge URLs by using static functions instead of requiring developers to create and use a separate class.

Other things to consider:

• Sample app is updated with new SDK changes
• Updated public documentation with new SDK changes (Immutable X and Immutable zkEVM)
• Sample game is updated with new SDK changes