Document usability studies on: Redesign of account types' signification

In a year's time accounts in MetaMask will be very different. There will be smart contract accounts, accounts created by snaps, non-EVM accounts, NFT accounts, account groups (and much more!). It’s important we consider the design for these new account types across all three clients (mobile, extension, portfolio) before we start building all of this. The scope for this redesign will be the redesign of account components across the whole user journey from onboarding to sending a token, which will involve: account setup, account details, accounts list, and transactions. This will also focus on extension and be limited to SRP accounts, imported accounts, accounts created by Snaps, and NFT accounts.