feat: add appearanceOverrides prop to KImg

[EshaanAgg]

Description

Adds the appearanceOverrides prop to KImg component for styling

Issue addressed

Fixes #371

Changelog

• #509
  • Description: Introduces appearanceOverrides prop for the KImg component
  • Products impact: new API
  • Addresses: KImg: Add 'appearanceOverrides' #371
  • Components: KImg
  • Breaking: No
  • Impacts a11y: Yes
  • Guidance: Adds a way to style the component intrinsically, allowing users to make more a11y compatible components

At a high level, how did you implement this?

I added a new prop to the component and then passed its styles to the styleObject.

Does this introduce any tech-debt items?

No

Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical and brittle code paths are covered by unit tests
• The change is described in the changelog section above

Reviewer guidance

• Is the code clean and well-commented?
• Are there tests for this change?
• Are all UI components LTR and RTL compliant (if applicable)?
• Add other things to check for here

After review

• The changelog item has been pasted to the CHANGELOG.md

Comments

[MisRob]

Thanks @EshaanAgg, and apologies for delayed response. I've just returned from my vacation and the whole team had holidays too. I will have a look in a few days.

[MisRob]

Thank you @EshaanAgg, all is looking great. Thank you for taking care of the documentation page. I will just tweak the changelog a bit, resolve the changelog conflict and then merge.

[MisRob]

Thank you for being diligent and providing guidance part @EshaanAgg. I removed it in my before merge commit because we rather want to discourage using this prop and it doesn't affect a11y directly as much as was indicated in your comment. Its main purpose is to allow flexible updates of styles when the implemented API is not sufficient, but overall we don't want to rely on it much.