Add severity for each finding

[roisec]

Description
Add a severity level (e.g., Low, Medium, High, Critical) to each finding to help prioritize remediation efforts.

Preferred Solution
Include a severity field in the output based on the type of secret and its impact. Example: Critical/high/medium

Additional Context
This will improve triaging and integration with CI/CD pipelines.

[kashifkhan0771]

I like the idea, but I am thinking about on what basis TruffleHog will assign severity?

[roisec]

Based on the risk of the relevant secret