Add Producer/Subscriptions to Topic View Filtering

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User story

1. As a user
2. I want to be able to filter producers/subscriptions
3. So that I can select the topics that are "connected" to a specific producers/subscription

Acceptance criteria

• The user is able to select producer/subscriptions for filtering on the topic view so that he can look at specific topics that are relevant to him (based on producers and subscriptions)

Definition of done (DoD)

• Feature is done when the acceptance criteria are fullfiled
• Feature is done when there are test where it is necessary and they pass
• Feature is done when the linter passes
• Feature is done when it is merged onto our main branch (after the code has been reviewed by at least one other person)
• Feature is done when the code has been documentend or commented properly

DoD general criteria

• Feature has been fully implemented
• Feature has been merged into the mainline
• All acceptance criteria were met
• Product owner approved features
• All tests are passing
• Developers agreed to release