Granular Verifier functions

[jdubpark]

Divide verifyParam into the three sections that require calling it, so we can pass in different parameters instead of jamming everything (including inputs not specified by users, such as mintAmount) into bytes call data.

function verifyMintingParam(address caller, uint256 mintAmount, bytes memory data) external returns (bool);
function verifyLinkParentParam(address caller, bytes memory data) external returns (bool);
function verifyActivationParam(address caller, bytes memory data) external returns (bool);

[Ramarti]

LGTM except the approval thing