implement launch builder for the desktop and web platforms

Cargo.toml

@@ -125,7 +125,7 @@ rust-version = "1.60.0"
 publish = false
 
 [dev-dependencies]
-dioxus = { workspace = true }
+dioxus = { workspace = true, features = ["desktop"] }
 dioxus-desktop = { workspace = true, features = ["transparent"] }
 dioxus-ssr = { workspace = true }
 dioxus-router = { workspace = true }