Add tamper module that append MEMBER OF

[HackingRepo]

Hi, sqlmap mainteners, i hope you doing well

In our new research case study, we discovered a sophisticated working technique that evaded owasp crs, and i'm sure cloudflare and more wafs, even worse, because these wafs modify blocking scores to 25 many of them

so worth adding a tamper module for it

Refs: coreruleset/coreruleset#4817

Thank's