fix: improve app's bootstrap HTML metadata

[jphastings]

Some simple changes to remove defaults from the CreateReactApp origins:

• Improves the HTML title to more specifically match this app (vs. other IPFS produced sites)
• Adds a meta description (pulled from the Github repo)
• Adds an IPFS theme colour in HTML meta
• Adds canonical link to bootstrap HTML

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[SgtPooki]

Thanks for this @jphastings, unfortunately, our pinning CI is currently broken due to Estuary sunsetting their pinning service and our ipfs-cluster intermittently failing on pinning this content. I am tracking some work to address this in #2161

[jphastings]

Thanks for keeping me up to date, let me know if there's anything you'd like me to do!

[lidel]

Lgtm, small suggestion inline but also fine to disregard.