feat: add support for fanout wallet

[echohtp]

Problem

Users request support for more wallets than metaplex standard supports

Solution

Use fanout wallets!

This PR adds support for createFanout and disperseFanout. createFanout currently only supports MembershipModel.Wallet, support for additional models, tbd.

createFanout

createFanout(
  encryptedMessage: EncryptedMessage!
  name: String!
  members: [FanoutMember]!
  splTokenAddress: String
): CreateFanoutResult

CreateFanoutResult:
message: String!
Operation message

fanoutPublicKey: String
Fanout public key

solanaWalletAddress: String
Solana address of the fanout

splFanoutAddress: String
Spl address of the fanout

splWalletAddress: String
Spl address of the fanout

disperseFanout

disperseFanout(
encryptedMessage: EncryptedMessage
fanoutPublicKey: String!
splTokenAddress: String
): DisperseFanoutResult

DisperseFanoutResult:
message: String!
Operation message

Tests

SOL

USDC

Multiple SPLs