feat: add dialectOptions to allow users to choose their connection options

[rap2hpoutre]

An alternative version of https://github.com/ForestAdmin/lumber/pull/468

See:

• https://github.com/ForestAdmin/lumber/issues/452
• https://forest.slite.com/app/channels/-KdBU14ToWBAerCk_HGS/notes/q24dZlQGGK
• https://app.clickup.com/t/82nzna
• https://community.forestadmin.com/t/ssl-issues-with-forestadmin/837
• https://forestadmin.productboard.com/roadmap/1782065-roadmap-forest-by-lanes/features/5553384/insights
• https://forestadmin.slack.com/archives/GCYMMU085/p1599721557051000

Pull Request checklist:

• [x] Write an explicit title for the Pull Request, following Conventional Commits specification
• [x] Create automatic tests
• [x] No automatic tests failures
• [x] Test manually the implemented changes
• [x] Review my own code (indentation, syntax, style, simplicity, readability)
• [x] Wonder if you can improve the existing code