[Keyboard] Adding AEK64 keyboard (#6725)

* Adding AEK64 keyboard

* Deleting useless layout definition

* Resolving many code review issues

* Documenting my 4sStylZ keymap

* Adding default keymap

* Apply suggestions from code review

Code review corrections

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

* Update keyboards/handwired/aek64/readme.md

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

* Correcting the NKRO implementation

keyboards/handwired/aek64/config.h

@@ -0,0 +1,78 @@
+/*
+Copyright 2015 Jun Wako <wakojun@gmail.com> <4sStylZ@protonmail.ch>
+
+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 "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6464
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    4sStylZ and others makers
+#define PRODUCT         AEK64
+#define DESCRIPTION     QMK keyboard firmware for AEK64 handwired
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 14
+
+// Originally made for a Teensy 2++
+#define MATRIX_COL_PINS { F0, E6, E7, B0, B1, B2, B3, B4, B5, B6, B7, D0, D1, D2 }
+#define MATRIX_ROW_PINS { E0, E1, C0, C1, C2 }
+#define UNUSED_PINS
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE    5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+// #define LOCKING_SUPPORT_ENABLE
+
+/* Locking resynchronize hack */
+//#define LOCKING_RESYNC_ENABLE
+
+/* Enable the space-cadet options */
+#define RSPC_KEYS KC_RSFT, KC_TRNS, KC_PGUP
+#define RCPC_KEYS KC_RCTL, KC_TRNS, KC_PGDOWN
+#define LSPO_KEYS KC_LSFT, KC_TRNS, KC_HOME
+#define LCPO_KEYS KC_LCTL, KC_TRNS, KC_END
+
+/* Enable double tab */
+#define TAPPING_TERM 175
+
+#define COMBO_COUNT 1
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION