Duplicated cmake-modules in each submodule

[makxenov]

Most of crypto3 libraries have cmake_modules as a submodule. I see it useless because even if their versions are different, the local copy will not override the first loaded module. For example, in zkllvm environment, every cm_* function will be loaded from zkllvm/cmake/modules(root repository). I think that we should remove this duplication and have only one source of modules.

[x-mass]

This could potentially allow us to build them as stand-alone modules (group of modules most times, because of dependencies).
Say, you have installed entire crypto3, then clone only hash repo, make changes and could build it as is, not as part of crypto3.

Good question here is if we really need to provide users an ability to handle stand-alone modules. crypto3 is not that big to be fetched as a single package