[main < E091] Add migration utils

[antoniofilipovic]

Description

This PR adds query procedures for migration from the MySQL, Oracle and SQL Server databases. Connection to the source DB can be configured in two ways: by explicitly passing the settings as a key-value map, or by loading them from a local JSON file.

Pull request type

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

Related issues

Delete if this PR doesn't resolve any issues. Link the issue if it does.

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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

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[antoniofilipovic]

@vpavicic for release note: Add option to get data from MySQL, SQL server, or Oracle DB and migrate afterwards to Memgraph