Feature request: Snippet function

[lonetown]

Have you searched existing Github issues to see if someone has already requested this feature?
Yes

Is your feature request related to a problem? Please describe.
I think it would be more convenient for heynote to provide a text snippet feature. When I enter a keyword, it automatically expands to full text

**Describe

currently use Heynote as a temporary editor for organizing text, collecting snippets of code, and temporarily formatting scripts. When I collect some logs, for the usual logs, I don't want occupy heynote blocks, but quickly generate the information collection template through the shortcut key

Describe alternatives you've considered
I currently use ahk for this function

Additional context
Add any other context or screenshots about the feature request here.