Add luanginxmore tamper script (#5881)

* Add luanginxmore tamper script

POST requests can accept far more parameters than GET requests, so for additional evasion, it's nice to have something capable of overwhelming a WAF with millions of parameters, not just hundreds.

Tested against public bug bounty programs with great success.

* Fix syntax error

Oops, forgot an extra closing parenthesis

* Fix missing imports