[Custom Proposal] Add "Advanced" staking lock options

The current vault system is great for crypto noobies as it is pretty easy to understand, however it would be beneficial to create additional staking options that reduce sell pressure by incentivizing stakers to lock their stake. This proposal would be to create an "advanced" options in the vaults page, where users can lock their stake for certain time periods, for example: "1 month, 3 months, 6 months, 1 year" or whatever the team decides is best. The current vault option of no lock would still exist, however this option would have the lowest APY. The higher the locking period, the higher the APY. Stakers will be able to withdraw their funds with no penalty if they withdraw after the lock period ends. If they need to unstake before the lock period end, they can do so with a penalty which is calculated depending on the amount of time left in their lock period.