@demex-sdk/wallet: Wallet client abstraction

[stevenkhong]

Summary

The wallet package aims to provide the following functionalities:

1. Abstract popular dApp wallet connectors (Keplr, Leap, Ledger, and RainbowKit) into a wallet model abstraction.
2. Provide an interface for transaction signing.
3. Manages the broadcast of signed transactions (including offline management of tx sequence numbers).
4. Support EIP712 message signing.
5. Support merge EVM account (specific to Demex chain).
6. Support authz and feegrant to enable signless experience on dApps.
7. Support group by converting messages to a group MsgSubmitProposal message.

Non-goals

• not to abstract any external chain interactions into this package (e.g. bridge deposits).

• not to include any specific wallet connection methods (e.g. DemexWallet.withLeap).

• implement signTx function body. feat: @demex-sdk/wallet #8

• add support for signing EIP712 messages. [@demex-sdk/wallet] EIP712 Signing #25

• add support for managing EVM account. Feat/merge account #29

• add support for grant account. Feat/grantee #20

• add signing/broadcast function hooks to notify dApp UI. feat: @demex-sdk/wallet #8

• add support to wrap messages as proposals for grouped accounts (abstraction moved to @demex-sdk/transact: Transaction Helper functions  #26)