Tidy up codebase 🌵

[ken-futureverse]

• Stick with one way of doing conditional rendering, either use If component or {if} block
• Remove service/cennznet/src/Transaction.ts class
• Remove node/types and web/types, then migrate their contents to node/utils and web/utils
• Migrate all the constants.ts to the apps/gov-website as it needs to match with env file defined there, also remove the .env.development, as what requires can be inferred from the constants.ts
• Ensure all library type doesn't consume the constants directly, e.g fetchRequiredRegistrars.ts, Transaction.ts
• Remove node/models
• Change "Success" step to "Complete"

[aidan-starke]

If we move away from react-extras we can use clsx for classnames

[ken-futureverse]

@aidan-starke could do that too, but I thought you are still keen to use the Choose component?

[aidan-starke]

yeah just throwing it out there, I think I'm getting used to <If> anyway 😅