Support all the 0.2 Ferris variants (#12653)

* Support all the 0.2 Ferris variants

For the Compact, the High and the Mini, create a new directory so each
keyboard may have the correct USB descriptor and a readme with more
specific information about it.

For the Bling, also add support for the underglow functionality.

Change the "MANUFACTURER" string to "Cuddly Keyboards Ltd.", the
name of the company I incorporated to sell keyboards, and change the
default descriptor from "Ferris the keeb" to "Ferris 0.2" which is more
descriptive.
I didn't update the 0.1 variants as I don't intend to sell these kits
with "Cuddly Keyboards". The firmware is mostly there to support
existing users.

Update the "hardware availability" to point to my new website:
cuddlykeyboards.com.

* Add RGB mode toggle to my keymap and to the default keymap

* Improve wording in the readme

keyboards/ferris/0_2/mini/config.h

@@ -0,0 +1,23 @@
+/*
+Copyright 2021 Pierre Chevalier <pierrechevalier83@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#undef PRODUCT_ID
+#define PRODUCT_ID 0x0004
+#undef PRODUCT
+#define PRODUCT Ferris 0.2 - Mini

keyboards/ferris/0_2/mini/readme.md

@@ -0,0 +1,18 @@
+# Ferris 0.2 - Mini
+
+![Ferris 0.2 - Mini, top view](https://i.imgur.com/s3luptVh.jpg)
+![Ferris 0.2 - Mini, bottom view](https://i.imgur.com/D4GxLQvh.jpg)
+
+
+Ferris 0.2 - Mini with Kailh Choc Mini support and Choc spacing.
+
+* Keyboard Maintainer: [Pierre Chevalier](https://github.com/pierrechevalier83)
+* Hardware Supported:
+    * Ferris 0.2 - Mini: (STM32F072 MCU on the left, MCP23017 on the right)
+* Hardware Availability: [Cuddly Keyboards](https://cuddlykeyboards.com)
+
+Make examples for this keyboard (after setting up your build environment):
+
+    make ferris/0_2/mini:default
+
+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. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).