Add cmap option to specify the colormap of plot (Sourcery refactored)

[sourcery-ai]

Pull Request #1788 refactored by Sourcery.

Since the original Pull Request was opened as a fork in a contributor's
repository, we are unable to create a Pull Request branching from it.

To incorporate these changes, you can either:

1. Merge this Pull Request instead of the original, or

2. Ask your contributor to locally incorporate these commits and push them to
   the original Pull Request

   Incorporate changes via command line

   git fetch https://github.com/tardis-sn/tardis pull/1788/head
   git merge --ff-only FETCH_HEAD
   git push

NOTE: As code is pushed to the original Pull Request, Sourcery will
re-run and update (force-push) this Pull Request with new refactorings as
necessary. If Sourcery finds no refactorings at any point, this Pull Request
will be closed automatically.

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[tardis-bot]

Before a pull request is accepted, it must meet the following criteria:

• Is the necessary information provided?
• Is this a duplicate PR?
  • If a new PR is clearly a duplicate, ask how this PR is different from the original PR?
  • If this PR is about to be merged, close the original PR with a link to this new PR that solved the issue.
• Does it pass existing tests and are new tests provided if required?
  • The test coverage should not decrease, and for new features should be close to 100%.
• Is the code tidy?
  • No unnecessary print lines or code comments.

[sourcery-ai]

Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 0.41%.

Quality metrics	Before	After	Change
Complexity	3.85 ⭐	3.47 ⭐	-0.38 👍
Method Length	83.54 🙂	81.22 🙂	-2.32 👍
Working memory	9.83 🙂	9.83 🙂	0.00
Quality	63.30% 🙂	63.71% 🙂	0.41% 👍

Other metrics	Before	After	Change
Lines	1613	1624	11

Changed files	Quality Before	Quality After	Quality Change
tardis/visualization/widgets/custom_abundance.py	63.30% 🙂	63.71% 🙂	0.41% 👍

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
tardis/visualization/widgets/custom_abundance.py	CustomAbundanceWidgetData.from_csvy	12 🙂	413 ⛔	18 ⛔	28.54% 😞	Try splitting into smaller methods. Extract out complex expressions
tardis/visualization/widgets/custom_abundance.py	CustomAbundanceWidget.on_btn_add_shell	11 🙂	383 ⛔	11 😞	38.78% 😞	Try splitting into smaller methods. Extract out complex expressions
tardis/visualization/widgets/custom_abundance.py	CustomAbundanceWidget.create_widgets	1 ⭐	537 ⛔	13 😞	43.87% 😞	Try splitting into smaller methods. Extract out complex expressions
tardis/visualization/widgets/custom_abundance.py	CustomAbundanceWidget.generate_abundance_density_plot	1 ⭐	191 😞	16 ⛔	49.11% 😞	Try splitting into smaller methods. Extract out complex expressions
tardis/visualization/widgets/custom_abundance.py	DensityEditor.create_widgets	0 ⭐	302 ⛔	12 😞	49.51% 😞	Try splitting into smaller methods. Extract out complex expressions

Legend and Explanation

The emojis denote the absolute quality of the code:

• ⭐ excellent
• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

Help us improve this quality report!

[codecov]

Codecov Report

Merging #1798 (370c5f2) into master (fa42fbc) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1798      +/-   ##
==========================================
+ Coverage   58.38%   58.43%   +0.04%     
==========================================
  Files          66       66              
  Lines        6705     6702       -3     
==========================================
+ Hits         3915     3916       +1     
+ Misses       2790     2786       -4     

Impacted Files	Coverage Δ
...s/tardis/visualization/widgets/custom_abundance.py	14.67% <0.00%> (+0.24%)	⬆️

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