Add ProvideHotkeysContextOptions

[mondeja]

I would like to write something like the next code to provide a global context for keyboard shortcuts:

provide_hotkeys_context(main_ref);

and provide the context with the default false and scopes!() parameters.

Implementation proposal

I think that the best approach is to use the same that leptos-use does (eg. see use_element_size and use_element_size_with_options) as this would reduce mental overhead when using libraries in the Leptos ecosystem.

• provide_hotkeys_context would accept only a node ref.
• Add a new function provide_hotkeys_context_with_options that would accept a new struct ProvideHotkeysContextOptions whose parameters can be defined using the builder pattern.

Of course, this is a breaking change that should be postponed for v0.3.0 or beyond that.