[Keymap] DZ60 keymap and layout (#5474)

* init

* function layout planning

* nordic keymap v1.0

* Added latest satan layouts, updated readmes

* Cleaning code

* Renamed ISO -> iso

* Updated keymap to work better with Swedish layout

* merge conflict

* Added dz60 layout

* pr issues fixes

* removed weirdly positioned files

* code cleanup, added dz60 layout json data

* Added dz60 layout readme

* Renamed layout

* removed vscode file

* Update keyboards/dz60/dz60.h

Co-Authored-By: OlliGranlund <OlliGranlund@users.noreply.github.com>

keyboards/dz60/keymaps/olligranlund_iso/readme.md

@@ -0,0 +1,6 @@
+# DZ60 with splitted parts
+### by Oliver Granlund
+
+![Finished product](https://i.imgur.com/HlEo5Yg.jpg)
+
+This is still under progress, but currently works on Windows as a daily driver.