This program allows for the creation of lockups that can be used to restrict the transfer of tokens.
Lockups are created with a duration and will not allow withdrawal of the locked tokens until the duration has passed.
The Lockup program uses an escrow token account owned by a Program-Derived Address (PDA) escrow authority signer.
Users deposit funds into the escrow when they create a new lockup. They submit
the number of tokens and the lockup period as inputs to the program's
Lockup instruction, which will transfer the tokens into the vault and issue a
lockup - which contains information about when the tokens can be accessed.
The program will only issue a withdrawal when the the lockup period has ended. This information is stored in the lockup account's state, which includes the start and end timestamp of the lockup period, the amount of tokens locked up, and the mint.
If a lockup period has ended, the lockup's creator (authority) can withdraw
the tokens using Withdraw.