feat: set up git lfs

.gitattributes

@@ -1,2 +1,8 @@
 # Normalize EOL for all files that Git considers text files.
 * text=auto eol=lf
+*.png filter=lfs diff=lfs merge=lfs -text
+*.fbx filter=lfs diff=lfs merge=lfs -text
+*.zip filter=lfs diff=lfs merge=lfs -text
+*.unitypackage filter=lfs diff=lfs merge=lfs -text
+*.jpg filter=lfs diff=lfs merge=lfs -text
+*.jpeg filter=lfs diff=lfs merge=lfs -text