Wallet schema v2

[ekzyis]

Description

based on #2092 because it's the target branch

This PR does the following:

• add static table WalletV2 which stores which send and receive methods a wallet supports
  => allows multiple send and recv methods per wallet
• split wallets by send and recv for easier validation of configuration instead of having both send and recv optional and rely on application logic to make sure the configuration is not invalid
• add wallet method tables (WalletSend..., WalletRecv...) which store configuration per user wallet
• use triggers to make sure that a method of a user wallet is actually supported by the wallet

How to add a new wallet:

• add a new row to the WalletV2 table and declare which send and recv methods it supports
• if it supports a new method, update enums and add a new wallet method table to store configuration

TODO:

• use unique index for walletId in wallet method tables so a user wallet can't have the same method twice for the same wallet
• check if HTTP methods to send and recv (LNbits, Blink, Phoenixd) can be abstracted away via one WalletSendHTTP table without resorting to JSON columns
• check if triggers can be unified
• add trigger to update JSON in UserWallet row
  • split JSON column into two columns for send and recv?
• wallet migration
  • wallet seed
  • migrate wallets
  • wallet seed with multiple wallets (LNbits, NWC, ...) per user
  • merge send/recv methods into the same wallet as much as possible
  • verify wallet migration with SQL assertions after migration
• verify wallet support
• update code to save/load wallets
• rename walletId foreign keys that point to UserWallet instead of WalletV2 to userWalletId to avoid confusion?

Additional Context

This is based on the latest discussion with @huumn how to plan further ahead with the wallet schema than to just migrate the vault in #2092.

Checklist

Are your changes backwards compatible? Please answer below:

tbd

On a scale of 1-10 how well and how have you QA'd this change and any features it might affect? Please answer below:

tbd

For frontend changes: Tested on mobile, light and dark mode? Please answer below:

n/a

Did you introduce any new environment variables? If so, call them out explicitly here:

no

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