add a pixi command to run an http server

Author: guenp

pixi.toml

@@ -27,6 +27,7 @@ build = { cmd = [
 clean = "rm -rf _build/*"
 start = "jupyter lab  --FileContentsManager.preferred_dir tutorials"
 test = "bash ./test.sh"
+serve = "python -m http.server 8000 -d _build/html"
 
 [feature.base.activation]
 # Workaround overrides JupyterLab configuration (at the environment level) to