Refactor primitive coordinates and optimisers

[shoubhikraj]

Resolves #265

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Checklist

• [ ] The changes include an associated explanation of how/why
• [ ] Test pass
• [ ] Documentation has been updated
• [ ] Changelog has been updated

[codecov[bot]]

Codecov Report

Merging #303 (554955a) into v1.4.1 (db7b03d) will increase coverage by 0.03%. The diff coverage is 97.50%.

@@            Coverage Diff             @@
##           v1.4.1     #303      +/-   ##
==========================================
+ Coverage   97.33%   97.36%   +0.03%     
==========================================
  Files         206      206              
  Lines       22957    22966       +9     
==========================================
+ Hits        22345    22361      +16     
+ Misses        612      605       -7     

Flag	Coverage Δ
unittests	97.36% <97.50%> (+0.03%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
autode/bracket/imagepair.py	98.81% <100.00%> (ø)
autode/opt/coordinates/cartesian.py	100.00% <100.00%> (ø)
autode/opt/coordinates/dic.py	100.00% <100.00%> (ø)
autode/opt/coordinates/primitives.py	98.18% <100.00%> (ø)
autode/opt/optimisers/base.py	97.02% <100.00%> (ø)
autode/opt/optimisers/crfo.py	99.19% <100.00%> (+0.01%)	:arrow_up:
autode/opt/optimisers/prfo.py	97.82% <100.00%> (+0.15%)	:arrow_up:
autode/opt/optimisers/rfo.py	100.00% <100.00%> (ø)
tests/test_opt/test_coordiantes.py	100.00% <100.00%> (ø)
tests/test_opt/test_crfo.py	100.00% <100.00%> (ø)
... and 2 more

... and 1 file with indirect coverage changes

[shoubhikraj]

@t-young31 Hi, the tests are failing from an error in import from conda. The release notes in the latest version of conda says that the imported function has been removed. Also, conda seems to be including the mamba solver now, so it should be possible to get rid of the mamba dependency for CI.