Add random walk module - HOW TO ADD A MODULE (EXAMPLE)

[MasterMedo]

This is a mock pull request to get a feel of the experience when creating a new module.

• [x] create the module
• [x] add code documentation
• [x] add test(s)

[MasterMedo]

Add test that will check expected behaviour. (that is currently not supported by mage).

[jmatak]

Closing stale PR