[Keymap] foxx1337 for Massdrop CTRL with raw HID (#8692)

* [Keymap] foxx1337's personal keymap

* Add keymap based on ctrl default
* Add 5 minute rgb matrix timeout

* Add foxx1337 layout defaults

* Add raw HID communication protocol

* Add rgbmatrix to the raw HID protocol

* Add readme

* Modernize ctrl, shift, alt mods detection

* Add GPL like copyright headers

keyboards/massdrop/ctrl/keymaps/foxx1337/rgb_matrix_user.inc

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2021 foxx1337 at yahoo dot 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/>.
+ */
+
+// !!! DO NOT ADD #pragma once !!! //
+
+// Step 1.
+// Declare custom effects using the RGB_MATRIX_EFFECT macro
+// (note the lack of semicolon after the macro!)
+RGB_MATRIX_EFFECT(hid_effect)
+
+// Step 2.
+// Define effects inside the `RGB_MATRIX_CUSTOM_EFFECT_IMPLS` ifdef block
+#ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS
+
+RGB rgb_matrix_led_state[DRIVER_LED_TOTAL];
+
+// e.g: A simple effect, self-contained within a single method
+static bool hid_effect(effect_params_t* params) {
+    RGB_MATRIX_USE_LIMITS(led_min, led_max);
+
+    for (uint8_t i = led_min; i < led_max; i++) {
+        rgb_matrix_set_color(i,
+            rgb_matrix_led_state[i].r,
+            rgb_matrix_led_state[i].g,
+            rgb_matrix_led_state[i].b);
+    }
+    return led_max < DRIVER_LED_TOTAL;
+}
+
+#endif // RGB_MATRIX_CUSTOM_EFFECT_IMPLS