Adding same host redirect support

[Mzack9999]

Proposed changes

This PR implements same host redirect functionality and refactor the internal code to make redirect handling easily extensible

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate) (listed at Add documentation for http protocol nuclei-docs#74 - major rework ongoing Review and Update docs nuclei-docs#73)

[ehsandeep]

host-redirects: true works as expected, but -fhr option works the same as -fr flag, i.e global redirect instead of host redirect.

requested new review