Refactor instruction handlers to use single instruction per handler pattern

X86Disassembler/X86/Handlers/IInstructionHandler.cs

@@ -0,0 +1,22 @@
+namespace X86Disassembler.X86.Handlers;
+
+/// <summary>
+/// Interface for instruction handlers
+/// </summary>
+public interface IInstructionHandler
+{
+    /// <summary>
+    /// Checks if this handler can decode the given opcode
+    /// </summary>
+    /// <param name="opcode">The opcode to check</param>
+    /// <returns>True if this handler can decode the opcode</returns>
+    bool CanHandle(byte opcode);
+    
+    /// <summary>
+    /// Decodes an instruction
+    /// </summary>
+    /// <param name="opcode">The opcode of the instruction</param>
+    /// <param name="instruction">The instruction object to populate</param>
+    /// <returns>True if the instruction was successfully decoded</returns>
+    bool Decode(byte opcode, Instruction instruction);
+}