Database Implementation for NFS Protocol

[termanix]

Description

This PR for NFS protocol's database implementation.

Type of change

• [x] New feature (non-breaking change which adds functionality)

Screenshots (if appropriate):

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Checklist:

• [x] I have ran Ruff against my changes (via poetry: poetry run python -m ruff check . --preview, use --fix to automatically fix what it can)
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation (PR here: https://github.com/Pennyw0rth/NetExec-Wiki)