change format for mod jars

- remove raw jars
- replace with modrinth.index.json
=> + save storage space and network bandwidth
=> - building is now more complicated

client/overrides/config/sodium-options.json

@@ -0,0 +1,12 @@
+{
+  "quality": {
+    "weather_quality": "FAST",
+    "enable_vignette": false
+  },
+  "advanced": {
+    "cpu_render_ahead_limit": 5
+  },
+  "performance": {
+    "use_entity_culling": false
+  }
+}