Add io.LimitReader with 5MB limit to all HTTP response body reads
to prevent potential memory exhaustion from maliciously large responses.
Affected files:
- pkg/scan/cms.go
- pkg/scan/subdomaintakeover.go
- pkg/scan/js/scan.go
- pkg/scan/js/supabase.go
- replace proprietary license with bsd 3-clause
- update all go file headers with new retro terminal style
- add header-check github action to enforce license headers
- completely rewrite readme to be modern, sleek, and lowercase
- fix broken badges
