Add QuestionRunningTime to QueryBuilder footer

[simivar]

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Closes #29482

Description

Shows "Running time" in the bottom right corner

How to verify

1. New question -> SQL Query -> bottom right corner

Checklist

• Tests have been added/updated to cover changes in this PR

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This change is 

[paoliniluis]

Hi @simivar thanks for your contribution. In order for this PR to be ready to review, we'll need you to sign the CLA and also add tests to cover this new feature

[simivar]

@paoliniluis I can easily add tests for the formatting function, but since I am not a frontend dev question from me: is there a test for the View part? Is footer tested anywhere? Some Selenium or something?

[paoliniluis]

Check the developer documentation

[simivar]

I've added tests for fullDuration function