CySQL Updates

[zinic]

Description

This changeset addresses several implementation defects and gaps in the CySQL translation code. The following tickets have been addressed:

• BED-5146 - support cypher functions toString and toInt
• BED-5130 - support instant type components epochseconds and epocmillis for datetime types
• BED-5148 - rework type inference handling to correctly negotiate between array types
• BED-5149 - implement cypher function size
• BED-5138 - correctly apply dangling constraints to projection select for all shortest path queries

Motivation and Context

Better support for Cypher to PgSQL.

How Has This Been Tested?

Test cases provided for all fixes.

Types of changes

• Chore (a change that does not modify the application functionality)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist:

• I have met the contributing prerequisites
  • Assigned myself to this PR
  • Added the appropriate labels
  • Associated an issue: Issues and Pull Requests README #672
  • Read the Contributing guide: https://github.com/SpecterOps/BloodHound/wiki/Contributing
• I have ensured that related documentation is up-to-date
  • Open API docs
  • Code comments (GoDocs / JSDocs)
• I have followed proper test practices
  • Added/updated tests to cover my changes
  • All new and existing tests passed