feat: Add About and Favourites pages, update routing and context management

- Added new routes for About and Favourites pages.
- Implemented About page with version information and credits.
- Created Favourites page with a placeholder message for empty favourites.
- Refactored RegionConfig import paths for consistency.
- Introduced PageTitleContext to manage page titles dynamically.
- Updated various components to utilize the new context for setting page titles.
- Enhanced AppShell layout with a responsive Drawer for navigation.
- Added CSS styles for new components and pages.
- Integrated commit hash display in the About page for version tracking.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/frontend/app/routes/about.css b/src/frontend/app/routes/about.css
new file mode 100644
index 0000000..8f13015
--- /dev/null
+++ b/src/frontend/app/routes/about.css
@@ -0,0 +1,7 @@
+.about-version {
+  margin-top: 2rem;
+  text-align: center;
+  color: var(--subtitle-color);
+  border-top: 1px solid var(--border-color);
+  padding-top: 1rem;
+}