Lua: Add Ramsearch functions

[Perdu]

This commit adds ability to perform RAM search from lua scripts.

Finding variables in memory can be an especially tedious process in libTAS as, unlike emulators, addresses change across different runs of the same process, or even inside a single execution of the process. This commits provides another way to make finding variable easier, along with the existing pointer search function.

To do this, I reused the MemScanner from RamSearchModel.

I included a basic example in the documentation to showcase how to use it to automatically retrieve the player x;y position in a game, provided we know the value at some specific frames.

I reordered the parameters in the API compared to memscanner.scan() to put values that users have more chance to be willing to change in first positions, as lua does not provide a way to use named parameters.

One thing that can be discussed is whether it would be a good idea to tie this search to the Ram search window (which I originally tried using newWatches() and searchWatches(), but I reverted to calling memscanner.scan() as it wasn't sufficient) or make them completely independent search. The latter would open the way to make several ram search in parallel, to look for different variables on the same frames.

[Perdu]

I noticed an issue: only the case when we compare integers works and not other types. I need to fix this

Note: the CI issue is due to the error that was fixed in e997120

[Perdu]

I noticed an issue: only the case when we compare integers works and not other types. I need to fix this

Note: the CI issue is due to the error that was fixed in e997120

Fixed + rebased to fix CI issue