add rustup bash completion

.bashrc

@@ -169,6 +169,11 @@ if [[ -x "$(command -v avp)" ]]; then
   . <(avp completion)
 fi
 
+# rustup completions
+if [[ -x "$(command -v rustup)" ]]; then
+  . <(rustup completions bash)
+fi
+
 export NVM_DIR="$HOME/.nvm"
 [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
 [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion