Config UI: General layout

[naltatis]

extracted part from #12958
prerequisite for "password change" #11732 and other non-device configurations

• ↔ use full layout width on larger screens
• 🍱 compact view of all non-device setting state
  • moved update/edit logic to separate screens/modals
  • cleaner ui. these settings will not be updated frequently
  • purpose of each setting or setting-group (e.g. port+host+protocol=network) can be explained on the separate screen
• 💬 refactored modal handling (introduced generic component)

⚠️ Only "title" and "telemetry" are editable right now. Other settings are present (and disabled) to get a feeling for future layout requirements. Unimplemented entries will be hidden once Config UI available in a first non-experimental state.

🗒️ Some texts are not translated yet, because this area is still subject to change, and we don't want to trigger unnecessary translation cycles. We'll translate them once we move out of experimental.

large screen: after

large screen: before

medium screen: after

medium screen: before

[RTTTC]

Wow, next release will have many nice improvements! Nice work! 😎