Full savestating to memory

lib/lcd.c

@@ -78,4 +78,12 @@ void lcd_write(u16 address, u8 value) {
     } else if(offset == 9) {
         update_palette(value & 0b11111100, 2);
     }
+}
+
+void lcd_save_state(lcd_state* state){
+    state->ctx = ctx;
+}
+
+void lcd_load_state(const lcd_state* state) {
+    ctx = state->ctx;
 }