Add MutePad keyboard (Handwired) (#16590)

* Add MutePad keyboard

* Update info.json and readme

* Move mutepad to handwired folder

* Address PR comments

keyboards/handwired/mutepad/config.h

@@ -0,0 +1,90 @@
+// Copyright 2022 JoshwJB (@JoshwJB)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0xFEED
+#define PRODUCT_ID 0x0000
+#define DEVICE_VER 0x0001
+#define MANUFACTURER JoshwJB
+#define PRODUCT MutePad
+
+/* key matrix size */
+#define MATRIX_ROWS 1
+#define MATRIX_COLS 4
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS \
+    { F6 }
+#define MATRIX_COL_PINS \
+    { B1, B3, B2, B6 }
+#define UNUSED_PINS
+
+/* encoder support */
+#define ENCODERS_PAD_A \
+    { F4 }
+#define ENCODERS_PAD_B \
+    { F5 }
+
+#define ENCODER_RESOLUTION 2
+
+#define TAP_CODE_DELAY 10