[Paris meetup] Centralize plugins

[DumbCata]

• [x] 104 address generation - Alliander
• [x] Bring SprintEins, Omicron plugins into OpenSCD org
• [x] Agree on a process or space to host the plugins
• [ ] Load exisiting plug-ins - Alliander-
• [ ] Centralize valid working branches to main Repo
• [ ] App-Store for 3rd parties
• [x] Overview of repositories / plugins
• [ ] Scaffolding tool / Distribution tool