[AGIPD][CORRECT] Use calcat_interface and remove precorrection notebook

Description

Updating AGIPD correction notebooks for using calcat_interface and avoiding calibrationDBRemote and cal_db_interactive

Note: This MR is based on https://git.xfel.eu/detectors/pycalibration/-/merge_requests/773

Related to https://git.xfel.eu/calibration/planning/-/issues/150 and https://git.xfel.eu/calibration/planning/-/issues/168

1. Remove notebooks/AGIPD/AGIPD_Retrieve_Constants_Precorrection.ipynb
2. Remove cal_tools/agipdlib functions for loading constants from YAML or DB. Also, remove related tests.
3. Move to retrieve and initialize constants to the AGIPD correction notebook.
4. Use a new feature for displaying the markdown table for retrieved constants.
5. Fix a bug when displaying one retrieved constant in CalibrationData metadata object.
6. Use a fragment file to store retrieved constants.
7. Clean-ups around related code.

How Has This Been Tested?

• Testing..

Relevant Documents (optional)

Types of changes

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)

Checklist:

Reviewers

@schmidtp @kluyvert

src/cal_tools/calcat_interface.py

@@ -181,7 +181,6 @@ class CalCatApi(metaclass=ClientWrapper):
         else:
             raise ValueError(f"{module_naming} is unknown!")
 
-
     @lru_cache()
     def calibration_id(self, calibration_name):
         """ID for a calibration in CalCat."""
@@ -956,10 +955,13 @@ class AGIPD_CalibrationData(SplitConditionCalibrationData):
 
     def _build_condition(self, parameters):
         cond = super()._build_condition(parameters)
-
         # Fix-up some database quirks.
-        if int(cond.get("Gain mode", -1)) == 0:
+        gain_mode = cond.get("Gain mode", None)
+
+        if gain_mode is not None and int(gain_mode) == 0:
             del cond["Gain mode"]
+        elif gain_mode is not None:
+            cond["Gain mode"] = 1
 
         if int(cond.get("Integration time", -1)) == 12:
             del cond["Integration time"]