[Keyboard] 40percentclub 4 pack macropad keyboard (#7088)

* 4 pack macropad layout added

* Update keyboards/40percentclub/4pack/keymaps/default/readme.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/40percentclub/4pack/readme.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/40percentclub/4pack/readme.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/40percentclub/4pack/readme.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/40percentclub/4pack/readme.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* remove unnecessary comments, remove firmware impact numbers, align comments

* remove unnecessary readme paragraphs

* pinout changed with direct pins instead of matrix

* typo fixed on led method name

* leds are now handled by backlight feture, led.c removed, info.json added, flash instructions updated

1 files changed, 54 insertions, 0 deletions

diff --git a/keyboards/40percentclub/4pack/4pack.c b/keyboards/40percentclub/4pack/4pack.c
new file mode 100644
index 0000000000..98f22a65a5
--- /dev/null
+++ b/keyboards/40percentclub/4pack/4pack.c
@@ -0,0 +1,54 @@
+/* Copyright 2019 Arda Kilicdagi
+ *
+ * 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/>.
+ */
+#include "4pack.h"
+
+// Optional override functions below.
+// You can leave any or all of these undefined.
+// These are only required if you want to perform custom actions.
+
+void matrix_init_kb(void) {
+  // put your keyboard start-up code here
+  // runs once when the firmware starts up
+
+  setPinOutput(F4); // cathodes
+  setPinOutput(F5); // cathodes
+
+  // Do the rest
+  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);
+}
+
+*/