Add MutePad keyboard (Handwired) (#16590)

* Add MutePad keyboard

* Update info.json and readme

* Move mutepad to handwired folder

* Address PR comments

keyboards/handwired/mutepad/keymaps/default/keymap.c

@@ -0,0 +1,43 @@
+// Copyright 2022 Joshua Barber (@JoshwJB)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names { _BASE };
+
+enum custom_keycodes { MUTE_GOOGLE_MEET = 0, MUTE_TEAMS = 1 };
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case MUTE_GOOGLE_MEET:
+            if (record->event.pressed) {
+                tap_code16(G(KC_D));
+            }
+            break;
+        case MUTE_TEAMS:
+            if (record->event.pressed) {
+                tap_code16(C(S(KC_M)));
+            }
+            break;
+    }
+
+    return true;
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [_BASE] = LAYOUT(MUTE_TEAMS, KC_F23, KC_F24, KC_MPLY)};
+
+#ifdef ENCODER_ENABLE
+
+bool encoder_update_user(uint8_t index, bool clockwise) {
+    if (clockwise) {
+        tap_code(KC_VOLU);
+    } else {
+        tap_code(KC_VOLD);
+    }
+    return true;
+}
+
+#endif

keyboards/handwired/mutepad/keymaps/default/readme.md

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+# The default keymap for MutePad