refactor(tui): one page window and one filter editor for every list

Four panes had grown the same dance around ratatui's table: clamp the
selection, take the visible page, hand the table a page-local state,
keep the page start. It is now page_window and render_page in a paging
module beside page_of, and the two popups page by the same count they
draw, tab bar or header included.

Five typed filters had grown the same key handling too. edit_filter now
takes a key for all of them, which also stops a control or alt chord
from typing its letter into a filter, stops Enter, which keeps a filter,
from resetting the view it is over, and lets the results and room-list
filters page like the others. Their titles and the typing shortcuts
come from one place as well.

soulseek-rs/src/ui/main_tui/mod.rs

@@ -1738,6 +1738,12 @@ mod tests {
         assert_eq!(rows(&tui), 3, "music, alpha, a2.flac");
         let screen = screen_of(&mut tui);
         assert!(screen.contains("filter: flac_"), "{screen}");
+        ctrl(&mut tui, 'd');
+        assert_eq!(
+            tui.state.browse.active_tab().expect("tab").filter(),
+            "flac",
+            "a control chord pages, it does not type"
+        );
         press(&mut tui, KeyCode::Enter);
         press(&mut tui, KeyCode::Char('j'));
         press(&mut tui, KeyCode::Char('j'));
@@ -1775,6 +1781,8 @@ mod tests {
         assert!(screen.contains("line 010"), "{screen}");
         assert!(!screen.contains("line 029"), "{screen}");
         assert!(screen.contains("filter: line 01_"), "{screen}");
+        ctrl(&mut tui, 'u');
+        assert_eq!(tui.state.rooms.log_filter, "line 01", "^u scrolls");
         press(&mut tui, KeyCode::Enter);
         press(&mut tui, KeyCode::Esc);
         assert!(tui.state.rooms.log_filter.is_empty());