Starting to create the renderer integrations.

These are the layer directly over dust which can be used by anything, not just blog posts.

src/render/duster_renderer.rs

@@ -0,0 +1,24 @@
+use super::renderer_integration::RendererIntegration;
+
+pub(crate) struct DusterRenderer {}
+
+impl RendererIntegration for DusterRenderer {
+    fn load_templates<I, P>(&mut self, dust_templates: I) -> Result<(), crate::error::CustomError>
+    where
+        I: Iterator<Item = P>,
+        P: Into<std::path::PathBuf>,
+    {
+        todo!()
+    }
+
+    fn render<P>(
+        &self,
+        context: &str,
+        build_directory: P,
+    ) -> Result<String, crate::error::CustomError>
+    where
+        P: AsRef<std::path::Path>,
+    {
+        todo!()
+    }
+}