[Keyboard] Move Hillside out of handwired (#18751)

Co-authored-by: mmccoyd <mmccoyd@cs.berkley.edu>

keyboards/hillside/46/0_1/0_1.c

@@ -0,0 +1,19 @@
+// Copyright 2022 Michael McCoyd (@mmccoyd)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "0_1.h"
+
+// Keymatrix spots to ignore, as one signals handedness and others have no key
+const matrix_row_t matrix_mask[] = {
+//c:543210  column id's
+  0b111111,
+  0b111111,
+  0b111111,
+  0b111110,
+  
+//c:543210  
+  0b111111,
+  0b111111,
+  0b111111,
+  0b111110
+};