feat: update netpols and swap postgres chart

[zachariahmiller]

Description

Lock down and add ability to configure network policies. Swap dev-postgres chart to operator in line with other packages.

Related Issue

Fixes # 67

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Other (security config, docs update, etc)