add seed data generator

[theAnuragMishra]

This pr adds a pseudo-random events generator perl script for the purposes of dev and testing.

Usage:
from the repo root, run ./scripts/generate-seed-data.sh.
For options see ./scripts/generate-seed-data.sh --help.

[Thunder-Blaze]

I think we could use Cpanel::JSON::XS while keeping JSON::PP as fallback in case someone wants to generate high amount of seed data to test

https://stackoverflow.com/questions/14591444/which-perl-module-would-you-recommend-for-json-manipulation

[theAnuragMishra]

Is complicating really worth it... I didn't feel it was slow generating 100k events.

[Thunder-Blaze]

Is complicating really worth it... I didn't feel it was slow generating 100k events.

I don't think it's that complicated, and as I said it'll be better in general for the users if they want to generate larger dataset (1-10M) not 100K