Enhance/#8176 - Add REST and datastore APIs for audience settings

[hussain-t]

Summary

Addresses issue:

• Add REST and datastore APIs for audience settings #8176

Relevant technical choices

PR Author Checklist

• My code is tested and passes existing unit tests.
• My code has an appropriate set of unit tests which all pass.
• My code is backward-compatible with WordPress 5.2 and PHP 5.6.
• My code follows the WordPress coding standards.
• My code has proper inline documentation.
• I have added a QA Brief on the issue linked above.
• I have signed the Contributor License Agreement (see https://cla.developers.google.com/).

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Code Reviewer Checklist

• Run the code.
• Ensure the acceptance criteria are satisfied.
• Reassess the implementation with the IB.
• Ensure no unrelated changes are included.
• Ensure CI checks pass.
• Check Storybook where applicable.
• 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]

Build files for d7e4d0b have been deleted.

[github-actions]

Size Change: +589 B (0%)

Total Size: 1.4 MB

Filename	Size	Change
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./dist/assets/js/googlesitekit-ad-blocking-recovery-********************.js	56.9 kB	-1 B (0%)
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./dist/assets/js/googlesitekit-data-********************.js	2.18 kB	-2 B (0%)
./dist/assets/js/googlesitekit-datastore-forms-********************.js	9.1 kB	+1 B (0%)
./dist/assets/js/googlesitekit-datastore-site-********************.js	18.3 kB	-1 B (0%)
./dist/assets/js/googlesitekit-datastore-ui-********************.js	10 kB	+1 B (0%)
./dist/assets/js/googlesitekit-datastore-user-********************.js	24.4 kB	-1 B (0%)
./dist/assets/js/googlesitekit-entity-dashboard-********************.js	65 kB	+6 B (0%)
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./dist/assets/js/googlesitekit-modules-ads-********************.js	15.4 kB	+1 B (0%)
./dist/assets/js/googlesitekit-modules-adsense-********************.js	110 kB	+7 B (0%)
./dist/assets/js/googlesitekit-modules-analytics-4-********************.js	109 kB	+709 B (+1%)
./dist/assets/js/googlesitekit-modules-pagespeed-insights-********************.js	22.5 kB	-7 B (0%)
./dist/assets/js/googlesitekit-modules-search-console-********************.js	57.6 kB	-2 B (0%)
./dist/assets/js/googlesitekit-modules-tagmanager-********************.js	29.8 kB	+15 B (0%)
./dist/assets/js/googlesitekit-settings-********************.js	58.7 kB	-2 B (0%)
./dist/assets/js/googlesitekit-user-input-********************.js	46.5 kB	-3 B (0%)
./dist/assets/js/googlesitekit-vendor-********************.js	316 kB	-1 B (0%)
./dist/assets/js/googlesitekit-widgets-********************.js	33.1 kB	-132 B (0%)
./dist/assets/js/googlesitekit-wp-dashboard-********************.js	59.4 kB	+2 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/assets/css/googlesitekit-admin-css-********************.min.css	52.3 kB
./dist/assets/css/googlesitekit-adminbar-css-********************.min.css	11.2 kB
./dist/assets/css/googlesitekit-wp-dashboard-css-********************.min.css	7.47 kB
./dist/assets/js/29-********************.js	2.8 kB
./dist/assets/js/30-********************.js	2.28 kB
./dist/assets/js/31-********************.js	3.72 kB
./dist/assets/js/32-********************.js	929 B
./dist/assets/js/33-********************.js	888 B
./dist/assets/js/34-********************.js	3.12 kB
./dist/assets/js/analytics-advanced-tracking-********************.js	778 B
./dist/assets/js/googlesitekit-api-********************.js	10 kB
./dist/assets/js/googlesitekit-components-gm2-********************.js	5.86 kB
./dist/assets/js/googlesitekit-components-gm3-********************.js	10.1 kB
./dist/assets/js/googlesitekit-datastore-location-********************.js	2.09 kB
./dist/assets/js/googlesitekit-i18n-********************.js	3.92 kB
./dist/assets/js/googlesitekit-modules-********************.js	21.7 kB
./dist/assets/js/googlesitekit-polyfills-********************.js	378 B
./dist/assets/js/googlesitekit-splash-********************.js	71.7 kB
./dist/assets/js/runtime-********************.js	1.3 kB

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[zutigrm]

Thanks @hussain-t, looks good, I just left few minor comments.

[zutigrm]

Thanks @hussain-t LGTM

[kuasha420]

Thanks @hussain-t ! This is nearly there. I've left a few comment for you to consider. Please, have a look.

[kuasha420]

Thanks @hussain-t! LGTM 🎉