✨ Add Solflare deeplink wallet implementation

[GabrielePicco]

Add Solflare deeplink wallet implementation

Status	Type	⚠️ Core Change	Issue
Ready	Feature	No	-

Description

Add Solflare deeplink wallet implementation, following the specs at https://docs.solflare.com/solflare/technical/deeplinks

Example

SolflareWallet Inject in web3:

var walletAdapter = new SolflareDeepLink(
    new SolflareWalletOptions(), 
    Web3.Instance.rpcCluster, 
    Web3.Instance.customRpc, 
    Web3.Instance.webSocketsRpc,
    true
);

// Execute the login
var account = await walletAdapter.Login();

// Set the Wallet instance in Web3
Web3.Instance.WalletBase = walletAdapter;