Gas Optimizations

[code423n4]

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[c4-judge]

Picodes marked the issue as grade-a

[c4-sponsor]

asselstine marked the issue as sponsor confirmed

[PierrickGT]

G-01: we are using Solidity 0.8.19, looks like contract existence is not checked anymore, so no need to use a low level call.
G-02: constants can't be private.
G-03: no need to mark functions payables if they are not.
G-04, 08, 12, 14, 19, 20, 21, 22, 23, 24, 25, 26: we would lose in code clarity.
G-05: checked by safeTransfer
G-06: we would need to pass ringBufferInfo to a require function, which will increase gas consumption since it won't be inline anymore.
G-07, 18: does not save any gas
G-09: we assign in the second case, so no multiple accesses here
G-10: has been fixed for the Vault. For the PrizePool, we need to pass values.
G-11: we can't use abi.encodePacked
G-13: we don't calculate anything here.
G-15, 16, 17: has been fixed