feat: implement comparison skeleton

This commit lays out the general idea of how the ComparisonData struct will work. It is expandable and I'm sure we will add more to it as time goes on.

src/pages/mod.rs

@@ -1,5 +1,6 @@
 mod about_page;
+mod comparison_test;
 mod home_page;
 mod unauthenticated_page;
 
-pub use self::{about_page::*, home_page::*, unauthenticated_page::*};
+pub use self::{about_page::*, comparison_test::*, home_page::*, unauthenticated_page::*};