Refactor new-keyboard to be python3.7 compatible (#14707)

* Use copy_tree from distutils for python 3.7 support

* Bump python version in docs

* Changed new-keyboard to use printf-style format strings

* Use username for manunfacturer / maintainer

* Update lib/python/qmk/cli/new/keyboard.py

Co-authored-by: Zach White <skullydazed@drpepper.org>

Co-authored-by: Zach White <skullydazed@drpepper.org>

data/templates/base/%(KEYBOARD)s.h

@@ -0,0 +1,22 @@
+// Copyright %(YEAR)s %(YOUR_NAME)s (@%(USER_NAME)s)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "quantum.h"
+
+/* This is a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT( \
+    k00, k01, k02, \
+      k10,  k12    \
+) { \
+    { k00, k01,   k02 }, \
+    { k10, KC_NO, k12 }  \
+}