Adding personal keymaps (#6384)

* initial commit

* migrated the actual keymap to this keyboard

* added the actual Tanuki keymap

* Added QMK DFU bootloader support

* TuCZnak's keymaps - final

* Update keyboards/tanuki/keymaps/tucznak/config.h

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Update keyboards/ut472/keymaps/tucznak/config.h

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Apply suggestions from code review

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

keyboards/tanuki/keymaps/tucznak/readme.md

@@ -0,0 +1,8 @@
+# TuCZnak's modified layout
+
+This layout is optimized for Czech national QWERTZ keymap.
+It includes separated layers for:
+ - F-keys and numbers
+ - national and special characters
+ - navigation cluster
+ - keyboard config and media control