Load data from QuantStudio qPCR systems

[ewallace]

@j-aux has been using tidyqpcr to work with ThermoFisher QuantStudio qPCR systems (no doubt trademarked.

Jamie has shared prototype code and anonymised data with @DimmestP and @ewallace via dropbox.

We need to add this capability into tidyqpcr by:

• [ ] writing a read_... function
• [ ] testing the read_... function
• [ ] showing that we can reproduce Jamie's analysis
• [ ] deciding if we incorporate as an additional vignette, or put it in an additional repository e.g. `tidyqpcr_examples, to be addressed in separate issue tickets.

[DimmestP]

Suggestion to create a write_plate function to automatically output tidyqpcr plate plan into a form QuantStudio can read (else you have to manually select and label all used wells using GUI on machine)

[ewallace]

I will start working on this, following the checklist above.

@j-aux will send example code for writing out the plate plan to QuantStudio format.