nuttx: add ci check for nuttx os

Signed-off-by: wanglei <wllenyj@gmail.com>

Author: wllenyj

.github/workflows/main.yml

@@ -111,6 +111,7 @@ jobs:
           - x86_64-unknown-redox
           - wasm32-unknown-emscripten
           - wasm32-wasip2
+          - thumbv8m.main-nuttx-eabihf
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly