Create solidity library for pure functions in VerifyTicket.sol

[snowwhitedev]

It seems we can make solidity library for pure functions in VerifyTicket.sol to optimize smart contract

[snowwhitedev]

@snowwhitedev how much gas can it save? how can it optimize contract? can you tell me?

I don't expect to reduce gas fee, but I will check gas differences. But we can reduce contract size at least