Reformat optimisation problem

[brosaplanella]

Description

Reformat optimisation problems and include OCP balance

Fixes #4

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• [x] New feature (non-breaking change which adds functionality)
• [ ] Optimization (back-end change that speeds up the code)
• [ ] Bug fix (non-breaking change which fixes an issue)

Key checklist:

• [ ] No style issues: $ flake8
• [ ] All tests pass: $ python run-tests.py --unit
• [ ] The documentation builds: $ cd docs and then $ make clean; make html

You can run all three at once, using $ python run-tests.py --quick.

Further checks:

• [ ] Code is commented, particularly in hard-to-understand areas
• [ ] Tests added that prove fix is effective or that feature works

[codecov[bot]]

Codecov Report

Merging #9 (321219c) into main (8fdb0cc) will increase coverage by 19.48%. The diff coverage is 63.63%.

@@             Coverage Diff             @@
##             main       #9       +/-   ##
===========================================
+ Coverage   57.74%   77.22%   +19.48%     
===========================================
  Files           6        8        +2     
  Lines         142      202       +60     
===========================================
+ Hits           82      156       +74     
+ Misses         60       46       -14     

Impacted Files	Coverage Δ
pbparam/optimisation_problems/data_fit.py	54.54% <20.00%> (ø)
pbparam/optimisation_problems/OCP_balance.py	65.21% <65.21%> (ø)
pbparam/__init__.py	100.00% <100.00%> (ø)
...optimisation_problems/base_optimisation_problem.py	100.00% <100.00%> (ø)
pbparam/optimisation_result.py	100.00% <100.00%> (+58.33%)	:arrow_up:
pbparam/optimisers/base_optimiser.py	100.00% <100.00%> (+5.88%)	:arrow_up:
pbparam/optimisers/scipy_minimize.py	100.00% <100.00%> (ø)

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[brosaplanella]

Cool! Will merge tomorrow (will try to add a couple of tests to increase coverage).