introduce HybridFilter

This introduces a new filter construct called HybridFilter. This allows
filters to have different remote filter than local ones. For example,
adding kind0 to the remote for keeping profiles up to date on your
timeline, but only subscribing to kind1 locally.

Only home/contact filters use this feature for now.

Fixes: https://github.com/damus-io/notedeck/issues/995
Signed-off-by: William Casarin <jb55@jb55.com>

crates/notedeck_ui/src/contacts.rs

@@ -1,5 +0,0 @@
-use nostrdb::Filter;
-
-pub fn contacts_filter(pk: &[u8; 32]) -> Filter {
-    Filter::new().authors([pk]).kinds([3]).limit(1).build()
-}

crates/notedeck_ui/src/lib.rs

@@ -3,7 +3,6 @@ pub mod app_images;
 pub mod blur;
 pub mod colors;
 pub mod constants;
-pub mod contacts;
 pub mod context_menu;
 pub mod gif;
 pub mod icons;