Add TS/JS/JSON formatting to the project

[npaun]

This PR extends @danlapid's work in #2505 to format JS/TS/JSON code too.

[danlapid]

I didn't feel like doing it so who am I to throw it on you but if you feel like adding bazel take a look at https://github.com/bazelbuild/buildtools/blob/main/buildifier/README.md
basically
linting:
buildifier --lint=warn path/to/file
buildifier --lint=fix path/to/file
formatting
buildifier --mode=check path/to/file
buildifier --mode=fix path/to/file

[danlapid]

Do we want to use prettier for markdown as well?
I've never tried it before so this is a really open ended question

[anonrig]

I think this is extremely hard to review and land without making sure we don't break anything. What we should do is, to enable prettier new rules on a specific folder, and divide the large chunk to smaller chunks while opening specific pull-requests according to that.

Also, I think we should use a specific prettier config that reduces the changes, and later iterate on finding the "sweet" formatting config that fits to our needs.

[penalosa]

These files have already been formatted with prettier, mostly—it seems like this change is just to change the ' to "?

[npaun]

In this discussion, several colleagues said they preferred single quotes, so I decided to apply it throughout the project.

#2543 (comment)

[penalosa]

Fair enough—as long as we're consistent. Worth noting that we use " in workers-sdk

[npaun]

@jasnell, @anonrig

[garrettgu10]

Obvs not a big deal but I prefer double quotes since JSON requires them, and being consistent with workers-sdk would be a nice benefit

[npaun]

Quote fight!

[npaun]

I'm on team single quotes, but it's not a big deal for me either.

[anonrig]

We can use different configuration on different folders. We just need to add .prettierrc to the folder where we want to have double quotes.

[npaun]

I would prefer to have a unified style in all of workerd, but I'm not opposed to per-folder if there is a strong reason

[garrettgu10]

I only looked at the pyodide folder but it looked nice, thanks!