Use case or problem:
I pop tags into a note, usually at the bottom, as they occur to me. But as a topic develops the time comes for some notes when I want to have those tags in YAML (for example, for use with Dataview). Transfering tags to YAML from their natural position in text is stressful, especially as there is no auto-suggest when typing tags in YAML.
Proposed solution
A command that acts on an individual note, which tells Obsidian to put any tag within that note (#MyTag) into YAML format (Tags: [MyTag]) at its top.