handwired/MS_sculpt_mobile Refactor, Configurator and cleanup (#4576)

* handwired/MS_sculpt_mobile: refactor

- layout macro KEYMAP renamed to LAYOUT
- layout macro MATRIX_TESTING_KEYMAP renamed to MATRIX_TESTING_LAYOUT

* handwired/MS_sculpt_mobile: Configurator support

* handwired/MS_sculpt_mobile: readme cleanup

* handwired/MS_sculpt_mobile: rename folder

Renamed the directory to fully lowercase.

* handwired/MS_sculpt_mobile: rename keyboard files

Renamed the keyboard core files to fully lowercase.

* handwired/ms_sculpt_mobile: keymap readme cleanup

Capitalization fixes because I'm that guy.

* handwired/ms_sculpt_mobile: keymap config.h fixes

Keymap config.h files updated to use #pragma once

* handwired/ms_sculpt_mobile: updated paths

Fixing path references due to rename.

keyboards/handwired/ms_sculpt_mobile/keymaps/default/rules.mk

@@ -0,0 +1,17 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in 
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI controls
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight. 
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend