Options from config file?

[AndreaCrotti]

When I pass many flags to carve, it gets a bit tricky to keep track of all the quotes and ().

Maybe if there was a flag --opts-from I could more simply have all the configuration in an end file and get read them from there?

[borkdude]

We could parse a file from --opts when:

• opts doesn't start with {
• (.exists (io/file opts) returns true

[AndreaCrotti]

Yeah that would work and should not really break anything

[borkdude]

PR welcome.