User-level custom tags

**User-Level Custom Tags**

We need the ability to add tags at the user level. These tags can be managed globally, which helps when registering an incident by allowing visibility of the incident only for certain tags.

The goal is to maintain a dynamic system status for specific tags. For example, we can create a tag as follows:

Tag

Name: Organization
Value: Customs System

Even though our registered components are global for all our clients (organizations), not all of them are impacted by a given incident. For instance, if an API for a specific client is deployed in a particular AWS region, only that client will be affected. Therefore, incident registration and visibility should be restricted to users of that client.