add: Template Define

Package/build/Polonium.targets

@@ -9,6 +9,7 @@
         <Compile Remove="script_templates/**/*.*"/>
         <Compile Remove="embedded/polonium_templates/**/*.cs"/>
         <AdditionalFiles Include="Assets/**/*.tscn"/>
+        <AdditionalFiles Include="Data/**/*" />
     </ItemGroup>
     
     <Target Name="PoloniumPrepare" BeforeTargets="PoloniumClean">

src/Attributes/TemplateDefines/TemplateBlock.cs

@@ -0,0 +1,9 @@
+namespace Polonium.Attributes.TemplateDefines;
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
+public class TemplateBlock(string signature, string template, string dataFile, string deps="") : Attribute
+{
+    public string Signature { get; set; } = signature;
+    public string Template { get; set; } = template;
+    public string DataFile { get; set; } = dataFile;
+    public string Deps { get; set; } = deps;
+}

src/Attributes/TemplateDefines/TemplateInline.cs

@@ -0,0 +1,9 @@
+namespace Polonium.Attributes.TemplateDefines;
+
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
+public class TemplateInline(string template, string dataFile, string deps="") : Attribute
+{
+    public string Template { get; set; } = template;
+    public string DataFile { get; set; } = dataFile;
+    public string Deps { get; set; } = deps;
+}