[Keyboard] Add Idobao Montex RGB (V2) (#16897)

* Add Montex V2 (#10)

* Update readme.md

* Update rules.mk

* Update config.h

* Update keyboards/idobao/montex/v2/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/idobao/montex/v2/rules.mk

Add Layouts

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Merged code fron work done with @vinorodrigues

* Update keyboards/idobao/montex/v2/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/idobao/montex/v2/v2.h

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/idobao/montex/v2/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

* Removing via_nug keymap

* update to montex code (#11)

* remove VIA_QMK_RGBLIGHT_ENABLE

* more data driven config, simple copyright headers, some code cleanup

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Vino Rodrigues <366673+vinorodrigues@users.noreply.github.com>

keyboards/idobao/montex/v2/readme.md

@@ -0,0 +1,41 @@
+# IDOBAO Montex V2
+
+![MONTEX V2](https://i.imgur.com/uHEispxh.png)
+
+A hotswap RGB numpad from IDOBAO.
+
+
+## Numeric Keypad
+
+* Keyboard Maintainer:
+    - [IBNobody](https://github.com/IBNobody)
+    - [vinorodrigues](https://github.com/vinorodrigues)
+* Hardware Supported: **IDOBAO Montex V2**
+* Hardware Availability: [IDOBAO.net](https://idobao.net/search?type=product&q=montex*)
+
+
+## Layout
+
+![](https://idobao.github.io/kle/idobao-id27-v2.png)
+
+
+## Compiling and Flashing
+
+Make example for this keyboard (after setting up your build environment):
+
+    make idobao/montex/v2:default
+
+Flashing example for this keyboard:
+
+    make idobao/montex/v2:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.<br>
+Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB
+* **Keycode in layout**: Press the key mapped to `RESET` if it is available