Add code and script to generate and import 250 security events

[mraible]

Usage:

cd foundry-sample-collections-toolkit/functions

# Generate a bunch of events in a CSV file
python generate_security_events.py

# Set env variables; app must be deployed for ID
cd csv-import
export APP_ID=...

# Make sure your API client has CustomStorage scope
export FALCON_CLIENT_ID=... 
export FALCON_CLIENT_SECRET...

# Run function
python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt --upgrade pip
python main.py

# Open a new terminal, and navigate to the functions directory 
# Import the CSV file to your collection
sh import-large-events.sh