feat: add ai snippets

[gagik]

One can install this snippet using the snippet command in mongosh:

# Set your snippet sources
config.set('snippetIndexSourceURLs',  'https://github.com/gagik/mongosh-snippets/raw/refs/heads/ai/index.bson.br;' + config.get('snippetIndexSourceURLs'))
# Restart mongosh for the change to take effect.
# Install the ai snippet
snippet install ai
# Run `ai` to out the commands!
ai

[addaleax]

Keep in mind that this package-lock file has no practical effect 🙂