Oleh Kalenyk

Appending delegated amount for existing account

1

Addressing issue when multiple delegations made to a single account preventing the following issue: ``` { storage_used: 245, near_amount: '3000000000000000000000', vote_amount: '9000000000', next_action_timestamp: '1657095428668116983', delegated_amounts: [ [ 'account1.testnet', '90000' ],...