Feat: add global context functions

Add functions like window() and router() to
allow dynamically grabbing global contexts
without have to use the hook variants.

Deprecates the existing hook variants to
discourage folks from adding more noise
to their codebases.

packages/router/src/lib.rs

@@ -53,6 +53,8 @@ pub mod hooks {
     pub use use_navigator::*;
 }
 
+pub use hooks::router;
+
 /// A collection of useful items most applications might need.
 pub mod prelude {
     pub use crate::components::*;