RPC connection
Associated token address
Owner of the tokens (signer)
Mint public key
Optionalpayer: SignerFee payer (signer, defaults to owner)
OptionalconfirmOptions: ConfirmOptionsOptional confirm options
OptionalinterfaceOptions: InterfaceOptionsOptional interface options
Optionaldecimals: numberTransaction signature, or null if nothing to load
Load token balances into a light-token ATA.