Add a parameter refinement engine, mythen reduction and sample alignment

[RJCD-Diamond]

This commit sets up the basis of what this repo is about, it contains lots of functions and classes for refinement and fitting and data reduction for the beamline ay DLS.

This is a big PR. IMO the first real commit should be big. Until this is a production repo, this is still experimental.

[codecov]

Codecov Report

❌ Patch coverage is 31.59821% with 3364 lines in your changes missing coverage. Please review.
✅ Project coverage is 31.84%. Comparing base (567c33c) to head (91df5f1).

Files with missing lines	Patch %	Lines
src/xrpd_toolbox/i11/mythen3_reduction_legacy.py	0.00%	929 Missing ⚠️
src/xrpd_toolbox/i11/angular_calibration.py	0.00%	488 Missing ⚠️
src/xrpd_toolbox/fit_engine/profile_calculation.py	25.68%	324 Missing ⚠️
src/xrpd_toolbox/i11/mythen.py	34.09%	290 Missing ⚠️
src/xrpd_toolbox/utils/utils.py	32.69%	177 Missing ⚠️
src/xrpd_toolbox/fit_engine/symmetry.py	29.33%	106 Missing ⚠️
src/xrpd_toolbox/i15_1/eiger_500k.py	47.31%	98 Missing ⚠️
src/xrpd_toolbox/fit_engine/fitting_core.py	69.10%	97 Missing ⚠️
...rc/xrpd_toolbox/fit_engine/peak_shape_functions.py	43.58%	88 Missing ⚠️
src/xrpd_toolbox/utils/messenger.py	28.57%	85 Missing ⚠️
... and 17 more

Additional details and impacted files

@@             Coverage Diff             @@
##             main       #2       +/-   ##
===========================================
- Coverage   97.22%   31.84%   -65.38%     
===========================================
  Files           4       30       +26     
  Lines          36     4936     +4900     
===========================================
+ Hits           35     1572     +1537     
- Misses          1     3364     +3363     

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