Enable Publisher plugin from transpower in open scd

[clepski]

Is your feature request related to a problem? Please describe.
As a user I want to able to use the publisher plugin from the transpower distribution.

Pluging source: https://danyill.github.io/scl-editor/plugins/oscd-publisher/oscd-publisher.js

Describe the solution you'd like
For the plugin to work we need to adjust open scd to be closer to the agreed upen core specs (https://github.com/OpenEnergyTools/open-scd-core/blob/main/API.md).

Requirements

• The publisher plugin can be imported and is working as intended

Necessary steps

• Add global styles accoring to the core API specs
• Handle openenergytools edit events v2 (which are slighty different from open scd edit events v2)
• Fix or add icons (material icons vs material symbols)
• Check for bugs resulting from conflicting mwc versions

[Sander3003]

Looks good, do you have a plan where to commit these changes? Maybe you can bring it for refinement tomorrow.

[clepski]

Looks good, do you have a plan where to commit these changes? Maybe you can bring it for refinement tomorrow.

Here is a PR with demo environment #1598, we can discuss changes in the refinement tomorrow