chore: add a how-to guide on using devcontainers and codespaces

[signorecello]

Description

This PR adds a how-to guide on devcontainers and codespaces

Problem*

Resolves #3622

Summary*

• Made a quick how-to guide on adding a devcontainer to a repository, so it can be used for codespaces
• Quick explanation on what are devcontainers all about, since they wouldn't fit anywhere else without smashing context
• Spent WAY MORE time than I should making a video and embedding it on the page

[github-actions]

🚀 Deployed on https://659e6bc389a086cdefd9ae30--noir-docs.netlify.app

[critesjosh]

Left a few small suggestions

[Savio-Sou]

Minor suggestions. Feel free to adopt / modify / dismiss as you see fit 🙏

[Savio-Sou]

Separately noticed that the tone of this guide is on the more casual side.

While the lightheartedness is nice, do want to flag it in case @noir-lang/developerrelations would like to discuss tone consistency.

[Savio-Sou]

Would be nice if the suggestions above could be reviewed first, but they don't necessarily have to block merging of this PR if needed.

[signorecello]

merging this mf 😈 we should think about serving the videos somewhere else though, I'll think about it and revisit later

[Savio-Sou]

Not sure if this is what was blocking the merge, but I'm seeing some "Pending" suggestions from my end.

(Re-)submitting a review comment to see if it helps.

UPDATE: Hmm they're still showing up with the "Pending" tag.

[signorecello]

Yeah I'll just stop being a lazy bastard and will open another PR on the same branch