Add postgresql analyzer

[roshanmaskey]

Postgres analyzer that analyzes postgresql installation and provides a TLDR and details findings report.

• Postgresql configuration - postgresql.conf
• Client authentication - pg_hba.conf
• Linux postgres account
• Postgres account bash history and psql history
• Postgresql logs

[aarontp]

Hi @roshanmaskey , Just wanted to check in on this one to see if you had any updates.