www/{nginx,nginx-devel,freenginx}: 3rd-party modules management
- Add new NJS_QJS option to build the NJS module with the QuickJS engine (lang/quickjs), which upstream recommends since njs 1.0.0
- Warn users with NJS enabled that the built-in njs engine is EOL
- Keep builds deterministic with NJS_QJS disabled (NJS_QUICKJS=NO)
- nginx-devel: remove leftover NJS_QJS bits pointing to deleted patches; stop the QuickJS include path from clobbering the base cc-opt flags
- nginx-full: enable NJS_QJS by default
Sponsored by: Netzkommune GmbH