Add pool cvxCRV/FRAXBP and ETH/frxETH to locked pool options

[0xtuytuy]

Is your feature request related to a problem? Please describe.
Adding more diversity to our locked pools options.

Describe the solution you'd like
We need to check what needs to be done (add coins to the exchange, update the strategy contract, test, etc.) and implement the 2 pools from fraxConvex:

1. 
2. 

Contract addresses are here:

1. Underlying curve: https://curve.fi/#/ethereum/pools/factory-crypto-97/deposit/ | staking address: https://etherscan.io/address/0x57c9F019B25AaAF822926f4Cacf0a860f61eDd8D
2. Underlying curve: https://curve.fi/#/ethereum/pools/frxeth/deposit | staking address: https://etherscan.io/address/0xa537d64881b84faffb9Ae43c951EEbF368b71cdA

This is of course a similar issue then with the frax.convex implementation in the LD repo, what do we do while its locked?
For now let's just lock the funds for 7 days, and the user is simply not able to withdraw. The DAO does NOT take the risk.

Describe alternatives you've considered
NA

Additional context
Add any other context or screenshots about the feature request here.

[AliyaDav]

1. For ETH/frxETH we have everything we need, there is only a PR with gas optimization.
2. For cvxCRV we need to add staking token 0x527331F3F550f6f85ACFEcAB9Cc0889180C6f1d5 to the Exchange.