✨ track constants and status in database

[bunop]

Description

With this PR we track database constants in a collection and we add background/foreground types to the samples

Related Issue

closes #11

Motivation and Context

This change is required to track information that can useful in API

How Has This Been Tested?

code as been tested with CI and by recreating the database

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change which improve code itself)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[coveralls]

Coverage increased (+0.02%) to 91.707% when pulling a4a1260 on issue-11 into 62096f8 on devel.