Add ssl flags

[danvergara]

Add SSL connection flags/query params

Description

When it comes to SSL connection, dblab assumes that you have the default files set in your system (e.g., ~/.postgresql/root.crt) and there's no way to customize this behavior right now.

Fixes #153

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

Ran the new feature in my system, QA'ing the app by trying multiple scenarios

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have checked my code and corrected any misspellings

[valerybriz]

Looks good 👍 I will add an issue to add this feature to the documentation