Cache Marketplace search results

[Dan-Q]

Changes proposed in this Pull Request:

Closes WCCOM#18292. The 100 most-recent search/browse/features/category-list results in the Marketplace are cached into a Map so that if you do the same browse/search again you get instant results (and don't hit our API) until you navigate away or actually refresh.

How to test the changes in this Pull Request:

1. Check out this branch.
2. Recompile assets e.g. cd plugins/woocommerce-admin && pnpm start
3. In your test environment, visit WooCommerce > Extensions
4. Browse and search. Notice (e.g. using your browser's debug > network panel) that repeat searches/browses don't result in repeat API hits.

Changelog entry

• Automatically create a changelog entry from the details below.

Significance

• Patch
• Minor
• Major

Type

• Fix - Fixes an existing bug
• Add - Adds functionality
• Update - Update existing functionality
• Dev - Development related task
• Tweak - A minor adjustment to the codebase
• Performance - Address performance issues
• Enhancement - Improvement to existing functionality

Message

Comment

Memory-cache In-App Marketplace search, browse, and category API hits, for performance.

[github-actions]

Test Results Summary

Commit SHA: 952e4bd

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 55s
E2E Tests	212	0	0	4	0	216	16m 56s

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To view the full API test report, click here.
To view the full E2E test report, click here.
To view all test reports, visit the WooCommerce Test Reports Dashboard.

[github-actions]

Hi @bgrgicak, @raicem,

Apart from reviewing the code changes, please make sure to review the testing instructions as well.

You can follow this guide to find out what good testing instructions should look like:
https://github.com/woocommerce/woocommerce/wiki/Writing-high-quality-testing-instructions

[raicem]

Looks clean and works great on my end. Love it. Thank you @Dan-Q!