407 Add test workflow for leapfrogai_ui

[jalling97]

• Adds a workflow for running the existing unit tests within the new UI.
• Adds a workflow to scan for active secrets using trufflehog
• Adds UI-focused linting checks to the existing lint workflow
• Adds eslint and prettier to pre-commit checks

After the workflows were added, linting changes were applied to this PR to get the UI compliant with the linter/formatter

[netlify]

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[andrewrisse]

I disabled the 'no-undef' rule for eslint because Typescript is already checking for this and gives no errors.
Docs Reference: https://typescript-eslint.io/troubleshooting/#i-get-errors-from-the-no-undef-rule-about-global-variables-not-being-defined-even-though-there-are-no-typescript-errors

[justinthelaw]

Just a question and some minor things!

[gerred]

all lgtm pending @justinthelaw's feedback being resolved.

[gerred]

fix conflicts then lgtm

[YrrepNoj]

Two small change requests.

[YrrepNoj]

LGTM.