Extract Story into separate story crate (#3378)

This PR extracts the `Story` component into a separate `story` crate so
that it can be shared among various crates that define stories.

Release Notes:

- N/A

---------

Co-authored-by: Nate Butler <iamnbutler@gmail.com>

crates/theme2/src/styles.rs

@@ -4,8 +4,14 @@ mod status;
 mod syntax;
 mod system;
 
+#[cfg(feature = "stories")]
+mod stories;
+
 pub use colors::*;
 pub use players::*;
 pub use status::*;
 pub use syntax::*;
 pub use system::*;
+
+#[cfg(feature = "stories")]
+pub use stories::*;