adds a -sh/--security-headers scan that flags missing or weak response
headers (hsts, csp, x-frame-options, x-content-type-options,
referrer-policy, permissions-policy, coop) and headers that leak server
internals (server, x-powered-by, ...). hsts is only graded over https
where it actually applies. wired into App.Run and the module results.
vmfunc
7efd62c804