Feat: add voyage-multimodal-3 (#7987)

### What problem does this PR solve?

Add voyage-multimodal-3.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

conf/llm_factories.json

@@ -3195,6 +3195,12 @@
             "tags": "TEXT EMBEDDING, TEXT RE-RANK",
             "status": "1",
             "llm": [
+                {
+                    "llm_name": "voyage-multimodal-3",
+                    "tags": "TEXT EMBEDDING,Chat,IMAGE2TEXT,32000",
+                    "max_tokens": 32000,
+                    "model_type": "embedding"
+                },
                 {
                     "llm_name": "voyage-large-2-instruct",
                     "tags": "TEXT EMBEDDING,16000",