Obsidian task notes integration : more customization

Hey! On paper, the Obsidian task notes integration is exactly what I've been waiting for, for a long time, but as an Obsidian power user, I haven't been able to fully adopt it yet because a few hardcoded settings currently clash with my workflow.

A bit more customization would completely unlock this feature for me:

• Custom YAML mapping: It would be amazing if we could map our own metadata keys and specific values to Morgen's task states. For example, instead of relying on a strict boolean completed field, I'd love to use my existing status key with values like "Inbox" or "Archive" to define completion. Same goes for using duedate instead of due_date.

• Alternative Task Name source: I use UIDs for my task file titles, so right now my synced tasks just show up as unreadable numbers in the calendar! Allowing us to pull the task name from a metadata key (like a name YAML field) instead of defaulting to the file title would fix this instantly.

I know custom mapping adds some technical complexity under the hood, but this flexibility would allow power users like me to seamlessly fit the integration into our existing vault structures.

Thanks a lot for the continuous updates! 🚀