feat: implement CSV export of scholarships

Cargo.toml

@@ -30,6 +30,7 @@ traits = { path = "./traits" }
 icondata = { version = "0.7.0", features = ["font-awesome"] }
 leptos_icons = "0.7.1"
 indexmap = { version = "2.13.0", features = ["serde"] }
+csv = "1.4.0"
 
 [features]
 default = ["ssr"]