ft: add first basic test

src/register.rs

@@ -3,7 +3,7 @@
 use crate::{disasm::DisasmError, operands::Operand};
 use core::fmt;
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 #[allow(dead_code)]
 /// Registers of a 8086 processor
 pub enum Register {
@@ -88,7 +88,7 @@ impl fmt::Display for Register {
 }
 
 /// Segment Registers of a 8086 processor
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 #[allow(dead_code)]
 pub enum SegmentRegister {
     DS,