Function getOrCreateAssociatedTokenAccount

getOrCreateAssociatedTokenAccount(connection: Connection, mint: PublicKey, owner: PublicKey, allowOwnerOffCurve?: boolean): Promise<{
    address: PublicKey;
    info: null | AccountInfo<Buffer>;
    instructions: null | InstructionReturn;
}>
Get or create an associated token account (ATA)

Gets the ATA address and if needed, the instruction to create it

Returns
Address of the new associated token account and instruction to create it if it doesn't exist
Parameters
- connection: Connection
  
  Solana connection
- mint: PublicKey
  
  the mint address
- owner: PublicKey
  
  the owner of the ATA
- Optional allowOwnerOffCurve: boolean
  
  allow the owner account to be a PDA (Program Derived Address)
Returns Promise<{
    address: PublicKey;
    info: null | AccountInfo<Buffer>;
    instructions: null | InstructionReturn;
}>