wip: Retrieve calibration constants metadata notebook

Summary:

This MR contains a notebook to retrieve metadata (creation-time and file-path) for calibration constants for (AGIPD, LPD, and DSSC) based on given parameter conditions only or conditions extracted from given raw data.

The new dssclib.py module has old functions which are being already used in https://git.xfel.eu/gitlab/detectors/pycalibration/blob/master/notebooks/DSSC/DSSC_Correct_and_Verify.ipynb#L315-334

@danilevc @jsztuk

How has this been tested

Using mentioned below raw data and by adding manual operating conditions.

AGIPD:

• raw-data: /gpfs/exfel/exp/SPB/202030/p900119/raw/r0080

LPD:

• raw-data: /gpfs/exfel/exp/FXE/201931/p900088/raw/r0270

DSSC:

• raw-data: /gpfs/exfel/exp/CALLAB/202031/p900113/raw/r9987

Reviewers:

@danilevc @jsztuk @kamile @kluyvert @samartse