Update Variable Names to Improve Clarity

[sa4mi]

Currently, the system uses the variable name accessTokenWalletAddress to associate the Shopify domain URL with the access token instead of a wallet address. However, this variable name is misleading and can cause confusion. Additionally, the table name accessTokenWalletAddress is also not appropriate for this purpose.

To address this, we should update the variable names and table names to improve clarity. Instead of using accessTokenWalletAddress, we can consider using more appropriate names such as shopifyInfo or something similar. This change will ensure that the codebase is more intuitive and easier to understand for developers working on the project.

Related issue

#21