Add sponsored transaction mechanism to Cis2_multi contract.
Changes
Add sponsored transaction mechanism.
Mint function logic was changed to airdrop a specific amount of tokens to the invoker. Anyone can invoke the function. The metaData URL in the input parameter of the mint function is ignored except for the first time a token_id is minted.
Purpose
Addresses https://github.com/Concordium/concordium-rust-smart-contracts/issues/367
Add sponsored transaction mechanism to
Cis2_multi
contract.Changes