Notification for only installed Profiles

[Skarlso]

Short description

As a user I want to only be notified for new versions for installed profiles so that I don't became overwhelmed with notification that I'm not interested in.

Right now regarding #1143 and the PR #1317 we are sending notification for all profiles regardless of their status regarding to the cluster.

However, detecting if a profile is installed is not trivial. Questions are where is it installed? In this cluster? In a repo? In any of the other clusters?

A potential other solutions is defining fine grained filters which a user could set to avoid getting notified for a specific profile which would help in certain cases, like not caring if it's installed or not.

Acceptance criteria

• notifications can be filtered with either a filter or by detecting installed status

[Skarlso]

Now it's possible after #1360 has been done. An installed profile into a cluster can be detected by looking for a specific HelmRelease with namespace, name, profiles name and version.