[master < path] Write docs for path module

[mpintaric55334]

Description

Please briefly explain the changes you made here.

Write docs for path MAGE QM.

Pull request type

Please delete options that are not relevant and check the ones that are.

• [x] New documentation page

Related PRs and issues

https://github.com/memgraph/mage/pull/313 PR this doc page is related to: Closes (link to issue):

Checklist:

• [x] I checked all content with Grammarly
• [x] I performed a self-review of my code
• [x] I made corresponding changes to the rest of the documentation
• [x] The build passes locally
• [x] My changes generate no new warnings or errors

[mpintaric55334]

@vpavicic Idora added 2 functions which were requested recently by a user, so i re-requested a review