Server: switch to Fastify

Switch config to TOML over JSON (it's just nicer TBH)

test.js

@@ -0,0 +1,16 @@
+import fs from "fs";
+// This is a test file to upload files to the Nebula server
+import { File, FormData } from "formdata-node";
+import { fileFromPath } from "formdata-node/file-from-path";
+import { parsedDoc } from "./server/config.js";
+const form = new FormData();
+const file = new File(["My hovercraft is full of eels"], "example.txt");
+form.set("file", file);
+console.log(form);
+await fetch("http://localhost:8080/api/upload-image", {
+    headers: {
+        PSK: parsedDoc.marketplace.psk
+    },
+    method: "post",
+    body: form
+}).then(async (res) => { console.log(await res.text()) });