Initial HerbAPI implementation

Rust/Axum REST API (herbapi-api) with PostgreSQL, S3/Garage, OIDC auth.
Dioxus 0.7 WASM frontend (herbapi-ui) with sidebar layout and botanical reference style.
9 SQL migrations covering families, species, cultivars, suppliers, companions, images, users, API tokens.

herbapi-ui/src/pages/mod.rs

@@ -0,0 +1,6 @@
+pub mod cultivars;
+pub mod families;
+pub mod home;
+pub mod search;
+pub mod species;
+pub mod suppliers;