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/milestogo/config.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#define USE_BABLPASTE
+
+// Expect to get errors if you comment a feature out and leave it in your keymap.
+
+#ifdef USE_BABLPASTE
+//define BabblePaste maps
+// Windows.
+#define MAC_MODE   0
+#define MS_MODE 1
+//aka gnome+KDE
+//#define LINUX_MODE 2
+//#define EMACS_MODE 3
+#define VI_MODE 3
+// Readline and tmux
+#define READMUX_MODE 2
+//#define WORDSTAR_MODE 5
+#endif
+
+// Uncomment if you need more free flash space
+
+// This removes everything but cursor movement
+//#define BABL_MOVEMENTONLY
+// and this just removes browser shortcuts
+//#define BABL_NOBROWSER
+
+// place overrides here