relocate 40percent.club boards to new parent folder (#4380)

* Initial move of 40percent.club boards to common parent folder.

* Refactor readme files to be consistent

* Refactor readme files to be consistent - fix make command examples.

* Refactor readme files to be consistent - align readme filenames.

* Refactor readme files to be consistent - fix repo url.

* Disable Community keymap builds as they are currently failing due to missing functionality

* Move more of 40percent.club boards to common parent folder.

* Refactor readme files to be consistent - align readme filenames.

* Refactor readme files to be consistent - fix make command examples.

125 files changed, 6732 insertions, 0 deletions

diff --git a/keyboards/40percentclub/4x4/4x4.c b/keyboards/40percentclub/4x4/4x4.c
new file mode 100644
index 0000000000..963b6d00d4
--- /dev/null
+++ b/keyboards/40percentclub/4x4/4x4.c
@@ -0,0 +1,29 @@
+
+#include "4x4.h"
+
+void matrix_init_kb(void) {
+	// put your keyboard start-up code here
+	// runs once when the firmware starts up
+
+	matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+	// put your looping keyboard code here
+	// runs every cycle (a lot)
+
+	matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+	// put your per-action keyboard code here
+	// runs for every action, just before processing by the firmware
+
+	return process_record_user(keycode, record);
+}
+
+void led_set_kb(uint8_t usb_led) {
+	// put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+	led_set_user(usb_led);
+}
diff --git a/keyboards/40percentclub/4x4/4x4.h b/keyboards/40percentclub/4x4/4x4.h
new file mode 100644
index 0000000000..ec75c3e280
--- /dev/null
+++ b/