[FR] Add `filename_smallcaps` option

[lambtho12]

See: https://github.com/renerocksai/telekasten.nvim/discussions/310

Add a filename_smallcaps so the filename can be formatted properly while the note title is kept intact. This is just a matter of using string.lower at the correct place.

myString = string.lower(myString)

When the config workflow has been refactored, it would be nice to have something like

config = {
  filename_format = {
    space_sep = "_",
    small_case = true,
    ...
  }
}

[martinpallmann]

you could instead also allow for a function that accepts the typed title and returns the filename like it is with the UUID function if I'm not mistaken.

[lambtho12]

Yes this is a possibility. But for now let's stick to the simple stuff :smile: