feat: SWIP 21

[0xCardinalError]

Implementation of SWIP on how to extend node storage capacity dedicated to the reserve to be able to calibrate operators' profitability.

More detail on this in SWIP writeup
ethersphere/SWIPs#56

[nugaon]

I tried to find some other occurrence when height is handled outside of calculateEffectiveStake but I did not find.
I thought that manageStake will do something with the stake based on the height value.

[nugaon]

also, please add a test when a node could not play in the round with height 0

[0xCardinalError]

also, please add a test when a node could not play in the round with height 0

also, please add a test when a node could not play in the round with height 0

I tried to make something like this, The problem is that when you change height you are triggering "MustStake2Rounds" as it is affecting the staking struct and we require by default that any staking changes enforces node out of play for 2 rounds. which is not a problem really as it wont be playing in those 2 rounds anyway but its problem for testing as actually after 2 rounds anchor is different so we are not testing much other then if node can play on different anchor with higher height which we already did test in other test. For node not playing with height 0 we already have test from before where we didn't even have height and we just added default one now which is zero. So I did add one new test with changing height to the same node, first it fails, then we change height and wait and then it succeeded.

[nugaon]

I tried to make something like this, The problem is that when you change height you are triggering "MustStake2Rounds" as it is affecting the staking struct and we require by default that any staking changes enforces node out of play for 2 rounds

Mine blocks until you get an anchor that satisfies being out of the node's proximity with the storageDepth, but it can play with height > 0.

[0xCardinalError]

I tried to make something like this, The problem is that when you change height you are triggering "MustStake2Rounds" as it is affecting the staking struct and we require by default that any staking changes enforces node out of play for 2 rounds

Mine blocks until you get an anchor that satisfies being out of the node's proximity with the storageDepth, but it can play with height > 0.

yes, that test was added.