Improve package version detection using jq, python and node

[matchai]

The following improvement made to the package section in spaceship should be ported over to spacefish to improve the accuracy of the version shown.

🐟 spacefish-bot — Pull request copied from: spaceship-prompt/spaceship-prompt#441.

grep solution to fetch version package.json was hacky and wasn't always returning expected values. Now using other fallback methods to get version information, Following discussions from spaceship-prompt/spaceship-prompt#439

Changes

• Fetch version information with jq with fallback to python and node.
• Gracefully exit from the section if no version information is found or is undefined from package.json

Fix spaceship-prompt/spaceship-prompt#439
Close spaceship-prompt/spaceship-prompt#552
Close spaceship-prompt/spaceship-prompt#553

[tiffafoo]

This was done in #143 🎉