FR: Add possibility to customize fileClass field name

[dmantula]

It's a common case when a category field is used to categorize the notes. And each category has its own set of fields.

For instance, a category person might have a field dateOfBirth or gender. A category city might have country.

This perfectly matches with fileClass feature.

Currently I have to duplicate the fields:

category: city
fileClass: city
country: Ukraine 🇺🇦

It would be fine if there was a setting to overwrite the fileClass field name. In the case above, I would just overwrite it with category and have the notes like:

category: city
country: Ukraine 🇺🇦

[dmantula]

Thinking forward, it would be nice if we can select fileClass (overwritten by category in the example above) for new notes.

I see the following flow:

• User runs the command Supercharged Links: Select fileClass
• The list of files in class files folder is loaded and shown
• User selects or types the fileClass name
• The field fileClass (or how it's overwritten) is added to the frontmatter, as well as the keys from the class file.