Keymap: Add Dvorak Svorak A5 layout for Ergodox-EZ (#3725)

Keymap: Add Dvorak Svorak A5 layout for Ergodox-EZ (#3725)

* Add svorak a5

* Update Svorak A5 keymap

* Fix issue with special characters

The initial keymap did not account for non US software layout. Hence, the
special characters were incorrect. Since this layout is aimed towards Swedish
writing people the presumption is that whoever uses it will have Swedish as
their OS language.

Includes:
 - Special character issue fixed
 - QWERTY layer that can be toggled if requiered (also presumes Swedish software
   layout)

* Add special characters and media keys

* Add ctrl, alt, etc. to functional layer