[new feature] field-editor some user requests

[pmario]

See: https://talk.tiddlywiki.org/t/intro-multiline-field-editor-plugin/1580/12?u=pmario

• Would it be possible to turn the dropdown into a dropdown toolbar button, like the ‘choose preview’ button?
• Could it be modified to get any of the current fields of the target tiddler, rather than just specific preselected ones?
• could it change what field displays in the view template as well?