require a Sign transaction for Solana's dapp request via Wallet connect v2

[blukhi99]

** I have an issue with the Sign transaction of Wallet connect V2's instruction in the wallet-core library**
dApp are connected by wallet connect v2 with Solana network and later try to send transaction. so, dApp requests for Signing and sending instructions, signatures( where the first one is null ), fee payer, and block hash for serialized and sign. I am unable to find any method so, can add this message data and sign easily

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Tag @Milerius