Enhancement: Modal UI for Snippet Data Entry

There is support for something like this for media snippets.

"frontMatter.dashboard.mediaSnippet": [
    "{{< caption \"{mediaUrl}\" \"{description}\" >}}"
  ],

This request is to extend this feature and define a template/UI for filling in variables that editors can use to define the values inserted into the snippet. It would be nice if the same syntax used for defining a taxonomy Content Type was used to define the structure/content of the UI for the snippet. Then you would need to map the inputs in the UI to placeholder variables in the snippet string/text. In the example above, {mediaUrl} and {description} would be placeholder variables that would be replaced by the input to string fields that the editor typed into the UI.

[estruyf]

Logic has been updated, the docs as well: https://beta.frontmatter.codes/docs/snippets

[estruyf]

Oh, yeah, thought you {} were required, but if that is not the case, you can remove these.