Add Sentence Transformers integration; default visual budget 1024

config_sentence_transformers.json

@@ -0,0 +1,9 @@
+{
+  "__version__": {
+    "sentence_transformers": "6.0.0"
+  },
+  "model_type": "MultiVectorEncoder",
+  "similarity_fn_name": "maxsim",
+  "prompts": {},
+  "default_prompt_name": null
+}