Adds new Voyage embedding models (#8845)

### What problem does this PR solve?
This PR enhances the application's capabilities by adding support for
four new Voyage embedding models (voyage-3-large, voyage-3.5,
voyage-3.5-lite, and voyage-code-3) to the `llm_factories.json`
configuration file. These models expand the available options for text
embedding tasks, enabling improved processing of text data with a
maximum token limit of 32,000. This addition addresses the need for more
diverse and specialized embedding models to support various use cases
without altering existing functionality.

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

conf/llm_factories.json

             "tags": "TEXT EMBEDDING, TEXT RE-RANK",
             "status": "1",
             "llm": [
+                {
+                    "llm_name": "voyage-3-large",
+                    "tags": "TEXT EMBEDDING,32000",
+                    "max_tokens": 32000,
+                    "model_type": "embedding"
+                },
+                {
+                    "llm_name": "voyage-3.5",
+                    "tags": "TEXT EMBEDDING,32000",
+                    "max_tokens": 32000,
+                    "model_type": "embedding"
+                },
+                {
+                    "llm_name": "voyage-3.5-lite",
+                    "tags": "TEXT EMBEDDING,32000",
+                    "max_tokens": 32000,
+                    "model_type": "embedding"
+                },
+                {
+                    "llm_name": "voyage-code-3",
+                    "tags": "TEXT EMBEDDING,32000",
+                    "max_tokens": 32000,
+                    "model_type": "embedding"
+                },
                 {
                     "llm_name": "voyage-multimodal-3",
                     "tags": "TEXT EMBEDDING,Chat,IMAGE2TEXT,32000",