Explain in docs how to import JSON files / read static files in Wasp on the server

[Martinsos]

Right now it is a bit tricky because you can directly import .json with node (at least 18), and people get surprised with it because error message is confusing (claims there is no file).

I explained how to go about it here: https://discord.com/channels/686873244791210014/1171780998699171841/1171780998699171841 .

We could add a small section in docs that covers this, since we had multiple people ask about this so far, even if it is not really Wasp-specific issue.

[Martinsos]

Another user asking about this: https://discord.com/channels/686873244791210014/1218225782183170158/1218225782183170158 .