chore: cleanup image-audit dependencies

[kptdobe]

Some restructuration and cleanup.

Test: https://asset-fix-dep--helix-labs-website--adobe.aem.page/tools/image-audit/index.html

[aem-code-sync[bot]]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

• [ ] Re-run PSI checks
• [ ] Re-sync branch

Commits

* [237a2e6](https://github.com/adobe/helix-labs-website/commit/237a2e64188b82eacca47bd64a846d1626deba69) :white_check_mark: (latest) * [ac76311](https://github.com/adobe/helix-labs-website/commit/ac763110c8620f8d8c3ad82dfe3f33b6219bb06c) :white_check_mark: * [2999afe](https://github.com/adobe/helix-labs-website/commit/2999afe6415ed950f081b06da719cc514a4c1f66) :white_check_mark: * [dac7612](https://github.com/adobe/helix-labs-website/commit/dac7612845b620912c1de8469d67bcffc6c2c5f9) :white_check_mark: * [58c9449](https://github.com/adobe/helix-labs-website/commit/58c9449247ed0e799204eb88f9350ab182daf973) :white_check_mark:

[aem-code-sync[bot]]

	Page	Scores	Audits	Google
:iphone:	/tools/image-audit/index.html
:desktop_computer:	/tools/image-audit/index.html