tw launch --params-file should be merged with pipeline params-file

[benbfly]

When I associate a --params-file with a pipeline, it gets stored as paramsText. Then if I launch that pipeline with a --params-file it seems to overwrite the paramsText, when what I would expect is it to merge the variables (overwriting when necessary).

At least that's the behavior I expect based on the Nextflow paradigm of config/params precedence rules.

I am using YAML params. I'm not sure if the same happens with JSON params