Support random* Foundry cheatcodes as alias for fresh*

[palinatolmach]

We should support random* cheatcodes added as a fuzzing counterpart to fresh* ones to Foundry: https://github.com/foundry-rs/forge-std/blob/da591f56d8884c5824c0c1b3103fbcfd81123c4c/src/Vm.sol#L1729 in this PR.

One difference we need to address is the fact that

    function randomUint(uint256 bits) external view returns (uint256);

takes uint256 bits, not uint8 bytes, as Kontrol does with freshUint.

We'd also need to add

    function randomUint(uint256 min, uint256 max) external returns (uint256);

It would also require an update in kontrol-cheatcodes.

One other things to consider is that the signed version of randomInt has to be treated differently from freshInt — the latter is defined in kontrol-cheatcodes, but defining it there would introduce conflicts with forge-std.