feat: add option to omit headers and skip specific headers in CLI run command output

[Pragadesh-45]

Description

This PR implements the feature to completely skip all headers or skip specific headers from the request and response after the request has run.

Example usage:

-- (Skip all) --

1. bru run --reporter-skip-all-headers --reporter-html results.html

-- (Skip) --

1. bru run --reporter-skip-headers "Authorization"
2. bru run --reporter-skip-all-headers "Authorization" "Cache-Control" --reporter-html results.html

Contribution Checklist:

• [x] The pull request only addresses one issue or adds one feature.
• [x] The pull request does not introduce any breaking changes
• [x] I have read the contribution guidelines.