Add API validation step for OpenAI in Settings

[HardeepAsrani]

Closes https://github.com/Codeinwp/otter-internals/issues/191

Summary

The PR adds a validation step to OpenAI API insertion by making an example request, thus making sure it also has the required capabilities for making a Chat Completion request.

Screenshots

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Test instructions

• Add an invalid key and confirm it shows an error about exactly what is wrong.
• Try using a valid key and confirm it is saved.
• Also trying emptying the field and confirm it is removed without showing any errors.

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Checklist before the final review

• Included E2E or unit tests for the changes in this PR.
• Visual elements are not affected by independent changes.
• It is at least compatible with the minimum WordPress version.
• It loads additional script in frontend only if it is required.
• Does not impact the Core Web Vitals.
• In case of deprecation, old blocks are safely migrated.
• It is usable in Widgets and FSE.
• Copy/Paste is working if the attributes are modified.
• PR is following the best practices

[pirate-bot]

Bundle Size Diff

Package	Old Size	New Size	Diff
Animations	263.48 KB	263.48 KB	0 B (0.00%)
Blocks	1.52 MB	1.52 MB	14 B (0.00%)
CSS	92.73 KB	92.73 KB	0 B (0.00%)
Dashboard	195.5 KB	195.94 KB	451 B (0.23%)
Onboarding	153.14 KB	153.14 KB	0 B (0.00%)
Export Import	90.21 KB	90.21 KB	0 B (0.00%)
Pro	361.57 KB	361.58 KB	7 B (0.00%)

[pirate-bot]

Plugin build for d2ed9e4 is ready 🛎️!

• Download Otter – Page Builder Blocks & Extensions for Gutenberg - Production ~ Development
• Download Otter Pro - Production ~ Development
• Download Blocks Animation - Production ~ Development
• Download Blocks CSS - Production ~ Development
• Download Blocks Export Import - Production ~ Development

[pirate-bot]

E2E Tests

Playwright Test Status:

Performance Results

serverResponse: 245.8, firstPaint: 156.6, domContentLoaded: 1615.95, loaded: 1616.75, firstContentfulPaint: 3602, firstBlock: 7056.2, type: 14.13, minType: 12.21, maxType: 17.93, typeContainer: 9.14, minTypeContainer: 7.83, maxTypeContainer: 11.56, focus: 36.13, minFocus: 31.09, maxFocus: 45.26, inserterOpen: 26.15, minInserterOpen: 22.87, maxInserterOpen: 33.11, inserterSearch: 0.77, minInserterSearch: 0.63, maxInserterSearch: 1.04, inserterHover: 3.39, minInserterHover: 2.69, maxInserterHover: 4.46, listViewOpen: 154.65, minListViewOpen: 138.85, maxListViewOpen: 188.55

[carlalexander]

Everything looked really good! Just a few comments, but nothing really major. 🥳

[carlalexander]

Just need to fix the json_decode edge case and we're good 🥳

[carlalexander]

Merge all the commits together and add the feat: in the commit message and we're good to go!

[pirate-bot]

🎉 This PR is included in version 3.0.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀