Add jina-embeddings-v2-base-zh model configuration (#2049)

api/core/model_runtime/model_providers/jina/text_embedding/jina-embeddings-v2-base-zh.yaml

+model: jina-embeddings-v2-base-zh
+model_type: text-embedding
+model_properties:
+  context_size: 8192
+  max_chunks: 2048
+pricing:
+  input: '0.001'
+  unit: '0.001'
+  currency: USD

api/core/model_runtime/model_providers/jina/text_embedding/text_embedding.py

@@ -17,7 +17,7 @@ class JinaTextEmbeddingModel(TextEmbeddingModel):
     Model class for Jina text embedding model.
     """
     api_base: str = 'https://api.jina.ai/v1/embeddings'
-    models: list[str] = ['jina-embeddings-v2-base-en', 'jina-embeddings-v2-small-en']
+    models: list[str] = ['jina-embeddings-v2-base-en', 'jina-embeddings-v2-small-en', 'jina-embeddings-v2-base-zh']
 
     def _invoke(self, model: str, credentials: dict,
                 texts: list[str], user: Optional[str] = None) \