Reduce two samples

[backmari]

Short description of the changes:

This change makes it possible to select multiple regions of interest in the same run and reduce them together. At MagRef it is common to have more than one sample per run, and this change makes it easier to reduce the data from such runs.

Users can add additional reduction tables by clicking the button with a "+" sign. This copies the runs from the first (main) reduction table. By selecting another reduction table "Data (ROI 2)" and adjusting the region of interest, the user can see the reflectivity curve for that sample. When the user clicks the button "Reduce..." and confirms the reduction options, each reduction table is reduced and reduced files are written.

Check list for the pull request

• I have read the [CONTRIBUTING]
• I have read the [CODE_OF_CONDUCT]
• I have added tests for my changes
• I have updated the documentation accordingly

Check list for the reviewer

• I have read the [CONTRIBUTING]
• I have verified the proposed changes
• best software practices
  • all internal functions have an underbar, as is python standard
  • clearly named variables (better to be verbose in variable names)
  • code comments explaining the intent of code blocks
• All the tests are passing
• The documentation is up to date
• code comments added when explaining intent

Manual test for the reviewer

Reduced data file with multiple peaks (need to remove .txt file extension):
REF_M_manual_test_multiple_peaks.dat.txt

References

Story 1233: [QUICKNXS] Add the capability to reduce two samples from the same run

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 81.08974% with 59 lines in your changes missing coverage. Please review.

Project coverage is 60.81%. Comparing base (8174025) to head (7d8aea8).

Files with missing lines	Patch %	Lines
...ivity_ui/interfaces/event_handlers/main_handler.py	72.22%	25 Missing ⚠️
...ui/interfaces/data_handling/processing_workflow.py	0.00%	17 Missing ⚠️
reflectivity_ui/interfaces/data_manager.py	90.42%	9 Missing ⚠️
reflectivity_ui/interfaces/main_window.py	87.80%	5 Missing ⚠️
...ctivity_ui/interfaces/data_handling/quicknxs_io.py	96.96%	2 Missing ⚠️
reflectivity_ui/interfaces/result_viewer.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             next      #91      +/-   ##
==========================================
+ Coverage   58.57%   60.81%   +2.23%     
==========================================
  Files          33       33              
  Lines        6330     6535     +205     
==========================================
+ Hits         3708     3974     +266     
+ Misses       2622     2561      -61     

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