v5.0.0

Both of my CSP-related packages moved to this monorepo. This is their new home.
Also

• synced packages so now both of them has version 5
• refactored types (no breaking changes expected)
• increased minimal supported NodeJs version to current LTS 10

csp-header and express-csp-header

• added some new directives
  • navigate-to
  • report-to
  • require-sri-for
  • require-trusted-types-for
  • trusted-types

express-csp-header

• added support for Report-To header