Migrate `@popper-js/core` to `@floating-ui/vue`

[0x009922]

Motivation

Popper JS package:

• is not tree-shakeable
• is not well typed
• is difficult to write extensions for
• is broken for bundlers (they emit warnings)

The popper's team realised it and re-formatted the project into Floating UI. You can read more on their site: Motivation | Floating UI