Optimizes the helpers.sh script

[AndresCdo]

Changes:

• Use -f flag with rm command to avoid the need for redirection to /dev/null.
• Combine all rm commands into a single line to improve performance.
• Use "$@" instead of $1 to allow the script to accept multiple arguments.
• Use printf instead of echo for better cross-platform compatibility.
• Use set -euo pipefail at the beginning of the script to catch more errors.
• Use command -v to check for the presence of a command before running it.
• Use xargs instead of ** to improve performance and avoid issues with certain filenames.