[Task]: Create Icons for every known plugin instead of the Plugin Icon

[muXxer]

Task description

Show a Icon on the left bar for e.g. Spammer and another one for Participation if these plugins are available instead of the Plugin Icon.

Requirements

Acceptance criteria

Creation checklist

• I have assigned this task to the correct people
• I have added the most appropriate labels
• I have linked the correct milestone and/or project

[msarcev]

We need icons for known plugins:

• Participation
• Spammer
• Proof of Inclusion
  And use a default plugin icon for everything else.

[msarcev]

Current:

[msarcev]

@muXxer Janis already has designs for a plugin overview screen, so we are thinking of closing this in favour of that direction.