[keyboard] Clueboard 2x1800 2021 Support (#13220)

* 2x1800 2021

* add support for writing a whole frame at a time

* improvements

* wip

* fix scrolling

* small tweak

* add a buffer that's larger than the display

* add the start of a font

* working upper and lower case letters

* add qmk animation

* integrate the message sign into the qmk task system

* add encoder defaults

* add MAX7219_LED_CUSTOM to config.h

* tweaks

* remove unneeded keymaps

* add a keymap showing how to control the signboard

* cleanup

* cleanup

* add a way to disable the startup test

* make it easier to define options at the keymap level

* Fix define names

Co-authored-by: Greg Cochard <gcochard@users.noreply.github.com>

* Apply suggestions from gcochard

Co-authored-by: Greg Cochard <gcochard@users.noreply.github.com>

* feedback from noroads

* format info.json

Co-authored-by: Greg Cochard <gcochard@users.noreply.github.com>

keyboards/clueboard/2x1800/2021/keymaps/signboard/config.h

@@ -0,0 +1,20 @@
+/* Copyright 2017 Zach White <skullydazed@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
+#define MAX7219_LED_FONTTEST
+
+// place overrides here