Finished CPU instructions and created ui window.

lib/cpu_util.c

@@ -92,4 +92,12 @@ void cpu_set_reg8(reg_type rt, u8 val) {
 
 cpu_registers *cpu_get_regs() {
     return &ctx.regs;
+}
+
+u8 cpu_get_int_flags(){
+    return ctx.int_flags;
+}
+
+void cpu_set_int_flags(u8 value){
+    ctx.int_flags = value;
 }