Checker Boards NOP60 touch-up (#13526)

* apply human-friendly formatting to info.json

* fix JSON tree errors in info.json

* rename layout macros

- rename LAYOUT_2x3u to LAYOUT_60_tsangan_hhkb_split_space
- rename LAYOUT_7u to LAYOUT_60_tsangan_hhkb

* rename 2x3u keymap to default

keyboards/checkerboards/nop60/keymaps/default/config.h

@@ -0,0 +1,23 @@
+ /*
+ Copyright 2020 Alec Penland
+ Copyright 2020 Garret Gartner
+
+ 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 TAPPING_TERM 175
+
+#define TAPPING_TOGGLE 2