Move syntax models to own folder

libs/UIX.Asm/Disassembler.cs

@@ -1,4 +1,5 @@
 using Humanizer;
+using Microsoft.Iris.Asm.Models;
 using Microsoft.Iris.Markup;
 using System;
 using System.Collections.Generic;

libs/UIX.Asm/Lexer.cs

@@ -1,4 +1,5 @@
-using Sprache;
+using Microsoft.Iris.Asm.Models;
+using Sprache;
 using System.Collections.Generic;
 using System.Linq;
 

libs/UIX.Asm/Models/Import.cs

@@ -0,0 +1,6 @@
+namespace Microsoft.Iris.Asm.Models;
+
+public record NamespaceImport(string Uri, string Name) : IImport
+{
+    public override string ToString() => $".import-ns {Uri} as {Name}";
+}

libs/UIX.Asm/Models/SyntaxModels.cs

@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 
-namespace Microsoft.Iris.Asm;
+namespace Microsoft.Iris.Asm.Models;
 
 public interface IBodyItem { }
 public interface IImport { }
@@ -20,16 +20,11 @@ public record Label(string Name) : IBodyItem
     public override string ToString() => $"{Name}:";
 }
 
-public record Operand(object Value, string? Content = null)
+public record Operand(object Value, string Content = null)
 {
     public override string ToString() => Content ?? Value.ToString();
 }
 
-public record NamespaceImport(string Uri, string Name) : IImport
-{
-    public override string ToString() => $".import-ns {Uri} as {Name}";
-}
-
 public record Program(IEnumerable<IImport> Imports, IEnumerable<IBodyItem> Body)
 {
     public override string ToString() => string.Join("\r\n", Imports.Select(i => i.ToString()).Concat(Body.Select(b => b.ToString())));