New keymap for The Helix keyboard("five_rows") (#2592)

* duplicate keyboards/helix/rev2/keymaps/default to keyboards/helix/rev2/keymaps/five_rows

* OLED Layer display 'Qwerty','Colemak','Dvorak'

* set Qwerty, Lower, Raise map

* set Colemak map

* set Dvorak map

* OLED Layer display 'Raise','Lower' change to 'Extra char','Function'

* fix ExtraChar Layer Shift-key disable

* Raise,Lower,Adjust layer modify

some key change KC_TRNS to KC_NO
add KANA, EISU key

* refine keymaps/five_rows/{config.h,rules.mk} for easy and safe customize

* modify Adjust layer: all function into left hand, remove F1..F12,DEL

* Add Helix five_rows keymap README.md and README_jp.md

* Raise Layer modify: enable Raise(Extr)+Lower(Func)==Adjust

* fix image file url in README.md,README_jp.md

* change Layer display on OLED

* change OLED display base name position

keyboards/helix/rev2/keymaps/five_rows/README.md

@@ -0,0 +1,73 @@
+# Keymap for 5 rows Helix keyboard
+
+This keymap is only for 5 rows Helix keyboard.
+
+## Layout
+
+![fig1](https://gist.github.com/mtei/c81a3688206aa50996339cb9ced4751d/raw/662082b66231eb8d1f45776d813c57f29d445e68/helix-five_rows_r2.png)
+
+## Layer
+
+|Priority|Number|Name|Discription|
+| ---- | ---- | --- | --- |
+|high|16|Adjust| keyboard local functions|
+||4|Extra char| some charactors |
+||3|Function| function keys |
+||2|Dvorak|Dvorak|
+||1|Colemak|Colemak|
+|low|0|Qwerty|QWERTY (base)|
+
+### Adjust Layer
+
+Adjust Layer has keyboard local function keys.
+
+* LED control.
+* Mac/Win mode change.
+* Qwerty/Colemak/Dvorak change.
+
+### Mac mode and Win mode
+
+Mac mode swap Alt/Win(GUI) key.
+
+|mode|key|code|
+| ---- | ---- | --- |
+|Mac mode|Adjust + g(Qwerty)|AG_NORM|
+|Win mode|Adjust + h(Qwerty)|AG_SWAP|
+|        |Adjust + t(Qwerty)|       |
+
+### LED control
+
+|command|key|code|
+| ---- | ---- | --- |
+|on/off|Adjust + ,(Qwerty)|RGB_TOG|
+|      |Adjust + v(Qwerty)|       |
+|change mode|Adjust + Right option |RGB_SMOD|
+|           |Adjust + c(Qwerty)|       |
+|HUE +|Adjust + .(Qwerty)   |RGB_HUI|
+|     |Adjust + Left Control|       |
+|HUE -|Adjust + menu        |RGB_HUD|
+|     |Adjust + Left Shift  |       |
+|SAT +|Adjust + /(Qwerty)   |RGB_SAI|
+|     |Adjust + a(Qwerty)   |       |
+|SAT -|Adjust + right hand left side Fn|RGB_SAD|
+|     |Adjust + z(Qwerty)              |       |
+|Bright +|Adjust + Right Shift    |RGB_VAI|
+|        |Adjust + s(Qwerty)|       |
+|Bright -|Adjust + right hand right side Fn|RGB_VAD|
+|        |Adjust + x(Qwerty)               |       |
+|reset|Adjust + w(Qwerty)|RGBRST|
+
+### Qwerty, Colemak, Dvorak selection
+
+|char layout|key|
+| ---- | ---- |
+|Qwerty | Adjust + j(Qwerty) |
+|       | Adjust + 5|
+|Calemak| Adjust + k(Qwerty) |
+|       | Adjust + 4|
+|Dvorak | Adjust + l(Qwerty) |
+|       | Adjust + 3|
+
+## Note
+
+![fig2](https://gist.github.com/mtei/c81a3688206aa50996339cb9ced4751d/raw/9979482e9aa0b25962fad9ee634cd1c23cef1751/five_rows_making.jpg)