Modules

[BookOwl]

If nemo is going to be useable for anything serious, it needs modules.

There will be two types of modules:

1. Rust modules. These will be written in Rust and dynamically loaded using libloading
2. nemo modules. These will be written in nemo.

The distinction will only be in the interpreter, not to nemo code.

[BookOwl]

There will also have to be a repository to store modules.

[BookOwl]

be69036 (and b00adb4) kind of add this for nemo modules in the file system.