Resolve "Listung von Dependencies"

Closes #97 (closed)

modules/asset_loader/README.md

+# Asset-Loader
+
+A VkCV module to load basic assets like models, materials and images
+
+## Build
+
+### Dependencies (required):
+
+| Name of dependency | Used as submodule |
+|----------------------------------------------------|---|
+| [fx-gltf](https://github.com/jessey-git/fx-gltf)   | ✅ |
+| [nlohmann::json](https://github.com/nlohmann/json) | ✅ |
+| [stb](https://github.com/nothings/stb)             | ✅ |