refactor: massive USRPFP overhaul (#3)

This repo completely overhauls how USRPFP works. Some changes include:
- Deleted some leftover files
- Edited README.md a bit
- Avatars and badges are now stored in `db/data.json`
- CSS file (`db/dist.css`) is automatically generated by a GitHub
workflow

If you have questions, lmk

.github/scripts/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "scripts",
+  "private": true,
+  "scripts": {
+    "convert": "node convert/index.mjs",
+    "generate": "node generate/index.mjs",
+    "generate:debug": "node generate/index.mjs --debug"
+  },
+  "dependencies": {
+    "uglifycss": "^0.0.29"
+  }
+}