Add support to define constraints to filter run periods

[Vindaar]

This adds the ability to control how run periods are matched at a finer level. Instead of just relying on run numbers, one can now define constraints based on data stored in the HDF5 files.

In very short:

• the runPeriod.toml file defines a set of constraints as keys
• the chipInfo.txt file for each chip in each of these run periods provides the keys and values for these constraints
• when calibrating data, we look up the matching run period based on the best matching set of constraints

Read the README here:
https://github.com/Vindaar/TimepixAnalysis/tree/addConstraints/resources/ChipCalibrations/Tpx3_Test_Constraints
for detailed instructions.