fix: Civo Database not detected

[Azanul]

Problem

Civo Databases were not being detected

Solution

The size was not being sent in GB but as the instance name. Wrote & used a utility function to map all available instance types to their respective sizes in GB.

Screenshots

Checklist

• Code follows the contributing guidelines
• Changes have been thoroughly tested
• Documentation has been updated, if necessary
• Any dependencies have been added to the project, if necessary

Reviewers

@jakepage91 @mlabouardy @AvineshTripathi