[Feature request] Make parsed SDRF data usable

[fabianegli]

Once SDRF information is parsed and validated it should be possible to use it in a convenient way.

Possible use cases are:

• exposing it via an API for consumption in scripts or
• writing it to a file.

Benefits

Python based proteomics data analysis tools don't need to reinvent the wheel, i.e. the SDRF parsing/validation.

A somewhat permissive parser could be used to enforce a strict adherence of the written SDRF file to the SDRF standard. This would have obvious benefits for anyone creating SDRF files as it would allow them to create byte-perfect SDRF files.