moved new MEGA65 keyboard handler to separate ROM segment

src/kernal/board_m65/C000.mega65_vectable_kernal_C.s

@@ -17,5 +17,5 @@
 
 	; Vector table (Open ROMs private!)
 
-	!word $0000
+	!word m65_scnkey
 }

src/kernal/board_m65/mega65_imports_C.s

@@ -0,0 +1,13 @@
+;; #LAYOUT# M65 KERNAL_C #TAKE
+;; #LAYOUT# *   *        #IGNORE
+
+;; #IMPORT# KERNAL_0 = KERNAL_0_combined.sym
+
+;
+; Definitions for calling MEGA65 segment KERNAL_0 routines from KERNAL_C
+;
+
+;; #ALIAS# m65_scnkey_init_pressed         = KERNAL_0.m65_scnkey_init_pressed
+;; #ALIAS# scnkey_buffer_full              = KERNAL_0.scnkey_buffer_full
+;; #ALIAS# kb_matrix_bucky_shflag          = KERNAL_0.kb_matrix_bucky_shflag
+;; #ALIAS# __kb_matrix_normal              = KERNAL_0.__kb_matrix_normal