Refactor of Consent Mode js to external file through webpack.

[benbowler]

Summary

Addresses issue:

• #8384

Relevant technical choices

Update and addressed all elements in the IB.

PR Author Checklist

• [x] My code is tested and passes existing unit tests.
• [x] My code has an appropriate set of unit tests which all pass.
• [x] My code is backward-compatible with WordPress 5.2 and PHP 7.4.
• [x] My code follows the WordPress coding standards.
• [x] My code has proper inline documentation.
• [x] I have added a QA Brief on the issue linked above.
• [x] I have signed the Contributor License Agreement (see https://cla.developers.google.com/).

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Code Reviewer Checklist

• [x] Run the code.
• [x] Ensure the acceptance criteria are satisfied.
• [x] Reassess the implementation with the IB.
• [x] Ensure no unrelated changes are included.
• [x] Ensure CI checks pass.
• [x] Check Storybook where applicable.
• [x] Ensure there is a QA Brief.

Merge Reviewer Checklist

• [ ] Ensure the PR has the correct target branch.
• [ ] Double-check that the PR is okay to be merged.
• [ ] Ensure the corresponding issue has a ZenHub release assigned.
• [ ] Add a changelog message to the issue.

[github-actions[bot]]

Build files for a2efa3289eccfe1f5be6b9433a219dec0f50a7b9 are ready:

• Download development build
• Download production build

[github-actions[bot]]

Size Change: +853 B (+0.05%)

Total Size: 1.57 MB

Filename	Size	Change
./dist/assets/js/googlesitekit-events-provider-contact-form-7-********************.js	644 B	-1 B (-0.16%)
./dist/assets/js/googlesitekit-events-provider-easy-digital-downloads-********************.js	623 B	+8 B (+1.3%)
./dist/assets/js/googlesitekit-events-provider-ninja-forms-********************.js	731 B	+4 B (+0.55%)
./dist/assets/js/googlesitekit-events-provider-optin-monster-********************.js	674 B	+1 B (+0.15%)
./dist/assets/js/googlesitekit-events-provider-woocommerce-********************.js	657 B	+5 B (+0.77%)
./dist/assets/js/googlesitekit-consent-mode-********************.js	836 B	+836 B (new file)	🆕

ℹ️ View Unchanged

Filename	Size
./dist/assets/css/googlesitekit-admin-css-********************.min.css	55.1 kB
./dist/assets/css/googlesitekit-adminbar-css-********************.min.css	11.2 kB
./dist/assets/css/googlesitekit-authorize-application-css-********************.min.css	770 B
./dist/assets/css/googlesitekit-wp-dashboard-css-********************.min.css	7.47 kB
./dist/assets/js/30-********************.js	2.76 kB
./dist/assets/js/31-********************.js	2.25 kB
./dist/assets/js/32-********************.js	3.64 kB
./dist/assets/js/33-********************.js	935 B
./dist/assets/js/34-********************.js	892 B
./dist/assets/js/35-********************.js	3.12 kB
./dist/assets/js/analytics-advanced-tracking-********************.js	776 B
./dist/assets/js/googlesitekit-activation-********************.js	23.8 kB
./dist/assets/js/googlesitekit-ad-blocking-recovery-********************.js	59.4 kB
./dist/assets/js/googlesitekit-adminbar-********************.js	34.7 kB
./dist/assets/js/googlesitekit-api-********************.js	10.1 kB
./dist/assets/js/googlesitekit-components-gm2-********************.js	5.87 kB
./dist/assets/js/googlesitekit-components-gm3-********************.js	10.1 kB
./dist/assets/js/googlesitekit-data-********************.js	2.36 kB
./dist/assets/js/googlesitekit-datastore-forms-********************.js	9.07 kB
./dist/assets/js/googlesitekit-datastore-location-********************.js	2.08 kB
./dist/assets/js/googlesitekit-datastore-site-********************.js	19.8 kB
./dist/assets/js/googlesitekit-datastore-ui-********************.js	10 kB
./dist/assets/js/googlesitekit-datastore-user-********************.js	25.1 kB
./dist/assets/js/googlesitekit-entity-dashboard-********************.js	75.7 kB
./dist/assets/js/googlesitekit-events-provider-mailchimp-********************.js	629 B
./dist/assets/js/googlesitekit-events-provider-popup-maker-********************.js	634 B
./dist/assets/js/googlesitekit-events-provider-wpforms-********************.js	632 B
./dist/assets/js/googlesitekit-i18n-********************.js	3.92 kB
./dist/assets/js/googlesitekit-main-dashboard-********************.js	125 kB
./dist/assets/js/googlesitekit-modules-ads-********************.js	29.5 kB
./dist/assets/js/googlesitekit-modules-adsense-********************.js	113 kB
./dist/assets/js/googlesitekit-modules-analytics-4-********************.js	145 kB
./dist/assets/js/googlesitekit-modules-********************.js	22.1 kB
./dist/assets/js/googlesitekit-modules-pagespeed-insights-********************.js	22.7 kB
./dist/assets/js/googlesitekit-modules-reader-revenue-manager-********************.js	11.2 kB
./dist/assets/js/googlesitekit-modules-search-console-********************.js	58.2 kB
./dist/assets/js/googlesitekit-modules-tagmanager-********************.js	31.9 kB
./dist/assets/js/googlesitekit-polyfills-********************.js	377 B
./dist/assets/js/googlesitekit-settings-********************.js	61.6 kB
./dist/assets/js/googlesitekit-splash-********************.js	72.7 kB
./dist/assets/js/googlesitekit-user-input-********************.js	48.1 kB
./dist/assets/js/googlesitekit-vendor-********************.js	320 kB
./dist/assets/js/googlesitekit-widgets-********************.js	62.9 kB
./dist/assets/js/googlesitekit-wp-dashboard-********************.js	61.5 kB
./dist/assets/js/runtime-********************.js	1.3 kB

_{compressed-size-action}

[benbowler]

I went through this with @aaemnnosttv, in our 1:1 today and I've updated this PR based on some comments there, notably:

1. I added the prefix to the conversion event provider files here.
2. I confirmed the webpack/frontendModules.config.js config does minify the code in production.
3. I renamed the config to webpack/frontendModules.config.js from webpack/frontendScripts.config.js.

Moving to MR.