feat: implement role-based authentication in admin dashboard 🔒

[ramiAbdou]

Description ✏️

This PR does the following:

• Instead of just checking for the presence of a user_id in the session, we'll actually query the database to ensure that the user is authenticated.
• Adds a role column for admins, and scraps the old is_ambassador column.
• Remove the allowAmbassador option for routes and instead use minimumRole.
• Combines the admin module into admin.core, admin.types and admin.ui.
• Protects the feature flags and Bull routes to owner.
• Adds the useAdminRole hook.

It also sneaks in a couple unrelated changes:

• Removes scroll from the Table component, which fixes a bug with the menu button of a table row that was scrolled.
• Deprecates the iife function in favor of the run function (same implementation, just different name).
• Adds the Dashboard.Header component.
• Adds a fail and success function to begin standardizing core function responses.
• Adds a custom SelectExpression to force database columns to use the table names with columns.

Type of Change 🐞

• Feature - A non-breaking change which adds functionality.
• Fix - A non-breaking change which fixes an issue.
• Refactor - A change that neither fixes a bug nor adds a feature.
• Documentation - A change only to in-code or markdown documentation.
• Tests - A change that adds missing unit/integration tests.
• Chore - A change that is likely none of the above.

Checklist ✅

• I have done a self-review of my code.
• I have manually tested my code (if applicable).
• I have added/updated any relevant documentation (if applicable).

[wflore19]

@ramiAbdou man your pr's are a breath of fresh air