feat: function to create a QFeatures object from DIANN output

[cvanderaa]

I moved readSCPfromDIANN() from the SCP.replication repo to the scp packages.

Upon request (see UCLouvain-CBIO/SCP.replication#23), I also added an argument ecol to select the column that contains the quantitative information.

I still need to perform the following tasks before considering this issue solved:

• Comprehensive unit testing
• Improve documentation: add examples
• Refactor: the code is too long and difficult to understand

[cvanderaa]

@KristinaGomoryova, you can play with the new argument after installing the development version of scp:

BiocManager::install(UCLouvain-CBIO/scp)
library(scp)
?readSCPfromDIANN

[KristinaGomoryova]

Thanks a lot, I'll try it right away!

[cvanderaa]

This issue is now solved in QFeatures since rformassspectrometry/QFeatures@c895bbc and propagated to scp since bca8162