Jinja filter and function for median and statistical_mode

[TheFes]

Proposed change

Add jinja filters and functions for mode and median

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Add statistical_mode and median to templating docs home-assistant.io#30297

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

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• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
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[tetele]

Nice addition, all in all

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[frenck]

I understand the context, but I think mode as a jinja2 function is confusing/ambiguous for a name (but I lack a better alternative/suggestion).

[tetele]

statistic_mode, perhaps?

[frenck]

As discussed on Discord with @TheFes, renaming it to statistical_mode

[frenck]

Thanks, @TheFes 👍

../Frenck