[diffoscope] [Reproducible-builds] Support for --ignore-profile flag in diffoscope

[Satyam Zode]

Hi, all !
I have been working on  " hiding differences " options. I have tried
to add some possible use cases, which I came across after researching
different differences as suggested in above discussion,many thanks to
all for their views.
Here is wiki page
https://wiki.debian.org/ReproducibleBuilds/HideProfilesSpecification

Since, we have a couple of use cases. I think, it's a proper time to
discuss and start thinking about implementation of these use cases as
well as categorize the CLI interface for the options. Most
importantly, we need to prioritize given use cases and decide which
one to support and which one to ignore.
Here, we also need to design these hiding options in such a way that
user shall understand what he/she is hiding and how it'll affect the
output.

Please feel free to edit the wiki page to add new things. :)
Looking forward to suggestions.

Thanking you!
Satyam Zode