fix: add alias class `OllamaEmbedding` (#527)

packages/core/src/embeddings/OllamaEmbedding.ts

+import { Ollama } from "../llm/ollama";
+import { BaseEmbedding } from "./types";
+
+/**
+ * OllamaEmbedding is an alias for Ollama that implements the BaseEmbedding interface.
+ */
+export class OllamaEmbedding extends Ollama implements BaseEmbedding {}

packages/core/src/embeddings/index.ts

@@ -2,6 +2,7 @@ export * from "./ClipEmbedding";
 export * from "./HuggingFaceEmbedding";
 export * from "./MistralAIEmbedding";
 export * from "./MultiModalEmbedding";
+export { OllamaEmbedding } from "./OllamaEmbedding";
 export * from "./OpenAIEmbedding";
 export { TogetherEmbedding } from "./together";
 export * from "./types";

packages/core/src/llm/ollama.ts

 import { CallbackManager, Event } from "../callbacks/CallbackManager";
-import { BaseEmbedding } from "../embeddings";
+import { BaseEmbedding } from "../embeddings/types";
 import { ok } from "../env";
 import {
   ChatMessage,