Starting to create the renderer integrations.

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

src/command/build/render.rs

@@ -3,6 +3,7 @@ use std::path::PathBuf;
 use crate::blog_post::convert_blog_post_to_render_context;
 use crate::blog_post::BlogPost;
 use crate::error::CustomError;
+use crate::render::DusterRenderer;
 
 pub(crate) struct SiteRenderer {
     pub(crate) output_directory: PathBuf,
@@ -16,6 +17,8 @@ impl SiteRenderer {
             println!("{}", serde_json::to_string(&render_context)?);
         }
 
+        let mut renderer_integration = DusterRenderer {};
+
         Ok(())
     }
 }