Allow directive js_shared_dict_zone

[dakshinai]

Proposed changes

Enable crossplane to recognize js_shared_dict_zone directive with ngx_http_js_module and ngx_stream_js_module

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING document
• If applicable, I have added tests that prove my fix is effective or that my feature works
• If applicable, I have checked that any relevant tests pass after adding my changes
• I have updated any relevant documentation (README.md)

[ornj]

• https://github.com/nginx/njs/blob/2b15d5e8d953c582b1e57988a5bb0ec0612c50ee/nginx/ngx_http_js_module.c#L448
• https://github.com/nginx/njs/blob/2b15d5e8d953c582b1e57988a5bb0ec0612c50ee/nginx/ngx_stream_js_module.c#L301