Create formalized tests

[glormph]

I run a battery of tests, but they are a bit loose and not defined in the repo. Need to create some proper tests, can even think about running on github actions if they can be fast enough.

Test checklist to be added to:

• at least a TIMS-TOF run
• Own MSGF modification spec
• different quant summarizations types (sweep, multi denom)
• DEqMS OK and Fail (single ch)
• LF / isobaric x Phos, Acetyl, GG x with totalprotnorm
• files and set names with weird characters (spaces, special char, start with a number, etc) that need quoting, or are disliked by R and maybe percolator?
• complement runs with added/exchanged sets (don't forget PTMs)
• no quant, no MS1 quant
• using old SQLite lookup
• different warnings, not enough PSMs, peptides, etc

Also important:

• Make sure there is output, double check if e.g. luciphor actually runs, or maybe it needs more PSMs.
• Small test data, so probably crappy conf lvls but that is fine.

[glormph]

Tests have been defined and can be run locally from the run_tests.sh script. But, output of runs is not verified yet! This is kind of important unless you want to check all QC output yourself.