Add Frontend documentation for Images best practices #11613
Merged
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🛠 Summary of changes
Updates Frontend documentation to include a section about images: what formats are expected, how they're optimized, and exceptions.
This builds upon a section started in #11381, generalized to images more broadly. It's based on a conversation I had in Slack with another developer who was adding an email image, which are an exception to the common rule of using SVG, and must be optimized manually.
📜 Testing Plan
Verify that the proposed content makes sense.