Parameters for producing from file

[asusikov]

Hey, thank you for your project!
Would be nice to have ability to keep parameters in file and get it from saved file.

Save to file:

$ protokaf generate HelloRequest \
    --data '{"name": {{randomFemaleName | quote}}, "age": {{randomNumber 10 20}}}' \
    --count 10 \
    --seed 42
    --save data.json

After we can use file to produce:

$ protokaf produce HelloRequest \
    --load data.json

[LaFut]

You don't need additional parameters.
$ protokaf generate HelloRequest \ --data '{"name": {{randomFemaleName | quote}}, "age": {{randomNumber 10 20}}}' \ --count 10 \ --seed 42 > data.json
and
$ cat data.json | protokaf produce HelloRequest

[asusikov]

I would like to save and load parameters, not data.