Chore/update linting tools

[mcocdawc]

Description

Updated and unified the pre-commit hooks in all earthkit packages.
Some of them were failing the test suite just because of the pre-commit hooks.
Fixing this it was a good opportunity to unify settings.

Uses now ruff for formatting (former black), linting, and import sort (former isort)

The following PRs do the same changes in all the earthkit packages:

• Chore/update linting tools earthkit-climate#43
• Chore/update linting tools earthkit-data#927
• Chore/update linting tools #39
• Chore/update linting tools earthkit-hydro#178
• Chore/update linting tools earthkit-meteo#125
• Chore/update linting tools earthkit-plots#176
• Chore/update linting tools earthkit-time#14
• Chore/update linting tools earthkit-transforms#87
• Chore/update linting tools earthkit-workflows#173

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.32%. Comparing base (ec3acf1) to head (98bc861).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #39      +/-   ##
===========================================
- Coverage    97.44%   97.32%   -0.13%     
===========================================
  Files            7        7              
  Lines          235      224      -11     
  Branches         7        7              
===========================================
- Hits           229      218      -11     
  Misses           3        3              
  Partials         3        3              

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[Copilot]

Pull request overview

This PR updates and standardizes the repository’s linting/formatting tooling (primarily via pre-commit), switching to Ruff for formatting, linting, and import sorting, and then applies the resulting auto-formatting across code, tests, docs, and CI/config YAML/TOML files.

Changes:

• Replace Black/isort-based pre-commit setup with Ruff-based checks/formatting plus unified YAML/TOML formatters.
• Apply Ruff/import/docstring formatting cleanups across Python sources and tests.
• Reformat various YAML/TOML configs (GitHub Actions workflows, conda env files, Read the Docs config) and a docs notebook cell.

Reviewed changes

Copilot reviewed 14 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.pre-commit-config.yaml	Switches to Ruff check/format hooks and updates formatting hooks for YAML/TOML and docs linting.
pyproject.toml	Adds/expands Ruff configuration and applies TOML formatting/normalization.
environment.yml	YAML reformatting of the dev environment definition.
tests/environment-unit-tests.yml	YAML reformatting of the unit-test environment definition.
.readthedocs.yml	YAML reformatting of Read the Docs configuration.
.github/workflows/ci.yml	YAML reformatting of CI workflow triggers/paths-ignore.
.github/workflows/legacy-ci.yml	YAML reformatting of legacy CI workflow structure/steps.
.github/workflows/cd-pypi.yml	YAML reformatting of tag trigger definition.
.github/workflows/notify-new-pr.yml	YAML reformatting of PR notification workflow.
.github/workflows/notify-new-issue.yml	YAML reformatting of issue notification workflow.
src/earthkit/geo/rotate.py	Import consolidation and docstring formatting.
src/earthkit/geo/distance.py	Import consolidation.
src/earthkit/geo/gisco.py	Minor string formatting simplification (URL template and error message).
src/earthkit/geo/constants.py	Module docstring formatting.
src/earthkit/geo/cartography.py	Error message string formatting simplification.
src/earthkit/geo/figure.py	Docstring punctuation normalization.
src/earthkit/geo/__init__.py	Import consolidation.
tests/test_rotate.py	Import consolidation.
tests/test_distance.py	Import consolidation and minor tuple literal simplification in parametrization.
tests/test_coord.py	Import consolidation.
tests/test_cartography.py	Import consolidation.
docs/examples/rotate.ipynb	Notebook code cell formatted (quote style).

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