feat(readarr): add the root folders UI

Renders the root folders table, the delete prompt and the add root
folder modal. The modal conveys its current step purely through
styling, which rendered output discards, so the step highlights are
computed by a separate function whose branches are asserted directly.

src/ui/readarr_ui/mod.rs

@@ -24,6 +24,7 @@ use super::{
 };
 use crate::ui::readarr_ui::blocklist::BlocklistUi;
 use crate::ui::readarr_ui::downloads::DownloadsUi;
+use crate::ui::readarr_ui::root_folders::RootFoldersUi;
 use crate::ui::utils::{extract_monitored_disk_space_vec, extract_monitored_root_folders};
 use crate::{
   app::App,
@@ -42,6 +43,7 @@ mod downloads;
 mod history;
 mod library;
 mod readarr_ui_utils;
+mod root_folders;
 
 #[cfg(test)]
 #[path = "readarr_ui_tests.rs"]
@@ -63,6 +65,7 @@ impl DrawUi for ReadarrUi {
       _ if DownloadsUi::accepts(route) => DownloadsUi::draw(f, app, content_area),
       _ if BlocklistUi::accepts(route) => BlocklistUi::draw(f, app, content_area),
       _ if HistoryUi::accepts(route) => HistoryUi::draw(f, app, content_area),
+      _ if RootFoldersUi::accepts(route) => RootFoldersUi::draw(f, app, content_area),
       _ => (),
     }
   }