[Keyboard] support for Stack Overflow The Key from Drop - adapted from @frap129 (#15520)

* support for Stack Overflow The Key from Drop - adapted from @frap129

* addressing code review comments

there's still some issues related to LEDs so i think for now the best
course of action is to remove those items until we can get better
details on the assembly of the board.

* removing this on the correct branch

* cleaning up more code review comments, moving to simpler/common formats for maps

* it is a C not a G fool

* well, looks like you can do it this way too for booting/dfu

* fixing missing newline for gcc to be quiet

* removing busted links

* formatting to match current template

* Update keyboards/massdrop/thekey/rules.mk

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

Co-authored-by: Andy Piper <andypiper@users.noreply.github.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/massdrop/thekey/thekey.h

@@ -0,0 +1,27 @@
+/* Copyright 2021 Joe Maples <joe@maples.dev>
+ *
+ * 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
+
+#include "quantum.h"
+
+#define XXX KC_NO
+
+#define LAYOUT( \
+    K00, K01, K02  \
+) { \
+    { K00, K01, K02 }, \
+}