[MIP-05] Switch Buy back & burn fee percentage with USD.m fee allocation percentage

The current model allocates 20% of generated trading fees to go towards the USD.m vault automatically.

The other 80% is allocated in other ways such as... 50% going towards buying back the MOLTEN token and burning it. 15% going towards buyback the MOLTEN token + used for staking rewards. and 15% going towards the development team.

This proposal aims to switch the allocation of MOLTEN buyback & burns and the USD.m fee allocation.

This will change the allocation to the following

USD.m Fee - 20% -> 50% Buyback & Burn - 50% -> 20% MOLTEN Staking - 15% Dev Fund - 15%

Where the USD.m vault will now get 50% of the fees and only 20% of fees will be allocated toward buying back MOLTEN and burning it.

This change was prompted for 2 main reasons. Growing TVL while under the market standard fee split deemed no longer sustainable, and our current goal is to rapidly grow TVL to accommodate more traders.