Inline the TailwindCLI into dx and run it during serve (#4086)

* wip: download the tailwind cli and then run it during serve
* allow no-downloads again

packages/cli/src/main.rs

@@ -17,6 +17,7 @@ mod platform;
 mod rustcwrapper;
 mod serve;
 mod settings;
+mod tailwind;
 mod wasm_bindgen;
 mod wasm_opt;
 mod workspace;
@@ -31,6 +32,7 @@ pub(crate) use logging::*;
 pub(crate) use platform::*;
 pub(crate) use rustcwrapper::*;
 pub(crate) use settings::*;
+pub(crate) use tailwind::*;
 pub(crate) use wasm_bindgen::*;
 pub(crate) use workspace::*;