Keymap: DZ60 layout based on stephengrier's with PgUp/PgDn/Home/End, Insert, etc. (#4110)

* DZ60 layout based on stephengrier's with customisations.

* CapsLock is used as Fn key.
* Del is available as Fn+Backspace & Shift+Backspace (using a macro)
* PgUp / PgDn / Home / End = Fn+Arrows (as on macOS, Microsoft Surface)
* Tilde = Shift+Esc
* Backtick = Fn+Esc
* Underglow toggle and mode selection are available as Fn+Q and Fn+W
* Reset (bootloader mode) = Fn+B

* Standardised layout formatting and Ctrl+Del & Shift+Del support.

Using 7 underscores for KC_TRNS in layouts and aligning the keycodes
according to LAYOUT_directional.

Del is now only Fn+Del, Ctrl+Backspace translates to Ctrl+Del,
Shift+Backspace translates to Shift+Del.

* Documented new Backspace/Del related macros.

Del is now just Fn+Backspace, pressing Ctrl+Backspace sends Ctrl+Del,
pressing Shift+Backspace sends Shift+Del

1 files changed, 52 insertions, 0 deletions

diff --git a/keyboards/dz60/keymaps/boris_burger/README.md b/keyboards/dz60/keymaps/boris_burger/README.md
new file mode 100644
index 000000000..64062f823
--- /dev/null
+++ b/keyboards/dz60/keymaps/boris_burger/README.md
@@ -0,0 +1,52 @@
+### boris_burger's DZ60 layout
+
+This layout is for a DZ60 with a 2U left shift, 1U right shift and an arrow cluster in
+the bottom right.
+
+It is based off stephengrier's layout adding support for Home/End/PgUp/PgDn using Fn+arrows
+as used on macOS and Microsoft Surface. It has Insert instead of Fn near the arrow cluster
+and other smaller tweaks:
+- CapsLock is the only Fn key (CapsLock by itself is not available)
+- Del is available as Fn+Backspace
+- Ctrl+Del is available as Ctrl+Backspace (e.g. deleting word to the right of the cursor)
+- Shift+Del is available as Shift+Backspace (e.g. permanently deleting file or e-mail)
+- PgUp = Fn+Up
+- PgDn = Fn+Down
+- Home = Fn+Left
+- End = Fn+Right
+- Tilde = Shift+Esc 
+- Backtick = Fn+Esc
+- Underglow toggle and mode selection are available as Fn+Q and Fn+W
+- Reset (bootloader mode) = Fn+B
+
+### 0 Qwerty
+```
+,-----------------------------------------------------------------------------------------.
+| Esc |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  0  |  -  |  =  |   Bkspc   |
+|-----------------------------------------------------------------------------------------+
+| Tab    |  Q  |  W  |  E  |  R  |  T  |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |    \   |
+|-----------------------------------------------------------------------------------------+
+|   Fn    |  A  |  S  |  D  |  F  |  G  |  H  |  J  |  K  |  L  |  ;  |  '  |    Enter    |
+|-----------------------------------------------------------------------------------------+
+| Shift     |  Z  |  X  |  C  |  V  |  B  |  N  |  M  |  ,  |  .  |  /  | RSh |  U  | Ins |
+|-----------------------------------------------------------------------------------------+
+| Ctrl |  Win  |  Alt  |              Space                | Alt | Menu |  L  |  D  |  R  |
+`-----------------------------------------------------------------------------------------'
+```
+
+### 1 Fn Layer
+```
+FN Layer
+,-----------------------------------------------------------------------------------------.
+|  `  |  F1 |  F2 |  F3 |  F4 |  F5 |  F6 |  F7 |  F8 |  F9 | F10 | F11 | F12 |    DEL    |
+|-----------------------------------------------------------------------------------------+
+|        |RBB T|RGB M| Hue+| Hue-| Sat+| Sat-| Val+| Val-|     |     |      |     |       |
+|-----------------------------------------------------------------------------------------+
+|         | BL T| BL M| BL+ | BL- |     |     |     |     |     |     |     |             |
+|-----------------------------------------------------------------------------------------+
+|           |     |     |     |     |RESET|     |     |     |     |     |     | PgUp|     |
+|-----------------------------------------------------------------------------------------+
+|      |       |       |                                   |     |      | Home| PgDn| End |
+`-----------------------------------------------------------------------------------------'
+```
+