[in_http] add options similar to add_http_headers and add_query_params found in fluentd

[ryn9]

Is your feature request related to a problem? Please describe.
Not related to a problem

Describe the solution you'd like
The in_http plugin would be much more useful if it supported options similar to add_http_headers and add_query_params found in fluentd

add_http_headers
https://docs.fluentd.org/input/http#add_http_headers

add_query_params
fluent/fluentd#3197

Describe alternatives you've considered
in_http provides a little dynamic nature on input via the URI mapping to the tag on input, but does not offer the same flexibility as found in the add_http_headers and add_query_params options

[agup006]

Note from community meeting - prefer that this is filterable as well as customizable.

[agup006]

Note for both, prefix customization will be much appreciated as theHTTP_ and QUERY_ that exist in Fluentd are not the best today

[github-actions]

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[github-actions]

This issue was closed because it has been stalled for 5 days with no activity.

[ajschmidt8]

I'd like to see this feature as well. It would help us simplify our Fluent Bit configs.