[Feature] Add support for GPTCache (#1065)

embedchain/config/cache_config.py

@@ -0,0 +1,16 @@
+from typing import Optional
+
+from embedchain.config.base_config import BaseConfig
+from embedchain.helpers.json_serializable import register_deserializable
+
+
+@register_deserializable
+class CacheConfig(BaseConfig):
+    def __init__(
+        self,
+        similarity_threshold: Optional[float] = 0.5,
+    ):
+        if similarity_threshold < 0 or similarity_threshold > 1:
+            raise ValueError(f"similarity_threshold {similarity_threshold} should be between 0 and 1")
+
+        self.similarity_threshold = similarity_threshold