Add installation of uvx to setup script

Author: pelikhan

.devcontainer/setup.sh

@@ -22,4 +22,7 @@ sudo apt-get update && sudo apt-get install google-cloud-cli -y
 export GOOGLE_APPLICATION_CREDENTIALS=.credentials/vertex_api.json
 export CLAUDE_CODE_USE_VERTEX=1
 export CLOUD_ML_REGION=us-east5
-export ANTHROPIC_VERTEX_PROJECT_ID=github-next
+export ANTHROPIC_VERTEX_PROJECT_ID=github-next
+
+# install uvx
+curl -LsSf https://astral.sh/uv/install.sh | sh