Integrate MP calculations from StakingRewardStreamer and check feasiblity

[0x-r4bbit]

There's been some experimenting by @gravityblast to implement an "epoch-less" staking algorithm.
The work is happening here: https://github.com/gravityblast/staking-rewards-streamer

Basically, it eliminates the need of fixed sized epochs and simplifies the calculation of multiplier points significantly by using a scale factor.

This would result in accounts no longer needing to "catch up" to epochs. Instead they can always calculate/claim rewards for any amount of time adhoc (or at any state changing function, like staking, unstaking etc).

This issue is about integrating the core of this algorithm into our existing protocol and see how it performs and whether it gives the expected results.