Update all docs links to 0.6, release 0.6 (#3225)

* update doc links to 0.6
* add new splash pages for crates
* update keyword features
* remove some unnecessary links

packages/dioxus-lib/Cargo.toml

@@ -3,10 +3,10 @@ name = "dioxus-lib"
 version = { workspace = true }
 authors = ["Jonathan Kelley", "Dioxus Labs", "ealmloff"]
 edition = "2021"
-description = "Portable, performant, and ergonomic framework for building cross-platform user interfaces in Rust"
+description = "Build fullstack web, desktop, and mobile apps with a single codebase."
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/DioxusLabs/dioxus/"
-homepage = "https://dioxuslabs.com/learn/0.5/"
+homepage = "https://dioxuslabs.com/learn/0.6/"
 keywords = ["dom", "ui", "gui", "react", "wasm"]
 rust-version = "1.79.0"