allow double-layer capacitance to depend on temperature

[valentinsulzer]

Description

allow double-layer capacitance to depend on temperature

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.

• 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: $ pre-commit run (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all
• The documentation builds: $ python run-tests.py --doctest

You can run unit and doctests together 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]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (f1f3fe5) 99.71% compared to head (53b8a52) 99.71%.

❗ Current head 53b8a52 differs from pull request most recent head 039c786. Consider uploading reports for the commit 039c786 to get more accurate results

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3174   +/-   ##
========================================
  Coverage    99.71%   99.71%           
========================================
  Files          248      248           
  Lines        18751    18761   +10     
========================================
+ Hits         18697    18707   +10     
  Misses          54       54           

Impacted Files	Coverage Δ
pybamm/models/submodels/electrode/ohm/li_metal.py	100.00% <100.00%> (ø)
...ential_form/composite_surface_form_conductivity.py	97.95% <100.00%> (+0.04%)	⬆️
...e_potential_form/full_surface_form_conductivity.py	100.00% <100.00%> (ø)
...otential_form/leading_surface_form_conductivity.py	100.00% <100.00%> (ø)
pybamm/parameters/lead_acid_parameters.py	100.00% <100.00%> (ø)
pybamm/parameters/lithium_ion_parameters.py	100.00% <100.00%> (ø)

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.