[Develop] Refactor Popover provider

[nathanlesage]

Description

Currently, the popovers across the app are managed by some very hacky logic implemented in less than ideally documented APIs in the Vue core. This was necessary when I did this because those have to be placed dynamically across the app outside the regular DOM flow. However, this is very brittle, as there is oftentimes something breaking due to the fragile logic. We now have the chance to improve this, since there is a new(ish) feature called teleport that potentially allows this.

Proposed Changes

Integrate Popovers more into the regular Vue workflow, e.g., via Teleports, to ensure that the regular data flow can be ensured.

Caveats

It might be that Teleport doesn't give us the fine-grained control over the positioning that we need; that would be something to check.

Do you Wish to Attempt Implementing this Yourself?

Yes

Zettlr Version

Right off the develop branch

Your Platform

• Windows
• macOS
• Linux

Operating System Version

all

Additional Information

No response