[main < T584] Implement meta.stats

[imilinovic]

Description

Implement meta.stats online and offline version.

Please briefly explain the changes you made here.

Pull request type

• Bugfix
• Algorithm/Module
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

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Reviewer checklist (the reviewer checks this part)

Module/Algorithm

• Core algorithm/module implementation
• Query module implementation
• Unit tests
• End-to-end tests
• Code documentation
• README short description
• Documentation on memgraph/docs
• Update GQLALchemy signatures in query builder using query module signature generator

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[antoniofilipovic]

I think we need to take into account multi-threading

[Josipmrden]

Some comments, overall good job

[antoniofilipovic]

Few changes and that should be it

[antoniofilipovic]

Looks good to me