[Keymap] Add narze keymap for usb-usb converter (#6881)

* Revert raise/backspace mod tap to just backspace

* Initialize usb_usb/narze

* Modify keys

* Add readme

* Support Right shift to )

* Add Dev layer

* Use Dev layer on holding z key

* Add Dev layer for Ergodox

* Update keyboards/converter/usb_usb/keymaps/narze/README.md

Fix the command & close the code block as suggested

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Reduce rules

keyboards/converter/usb_usb/keymaps/narze/config.h

@@ -0,0 +1,48 @@
+#pragma once
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#undef TAPPING_TERM
+#define TAPPING_TERM 100
+
+#define COMBO_TERM 20
+#define COMBO_COUNT 1
+
+#define IGNORE_MOD_TAP_INTERRUPT
+#define PERMISSIVE_HOLD
+
+#define SUPER_DUPER_SOUND S__NOTE(_B1)
+
+#define MOUSEKEY_DELAY 100
+
+#define USB_POLLING_INTERVAL_MS 1
+
+#ifdef AUDIO_ENABLE
+    #define STARTUP_SONG SONG(PLANCK_SOUND)
+
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif