[ENH] Add JinaEmbedding TypeScript client (#1406)

## Description of changes

Add TypeScript client for Jina Embeddings as suggested in #1324 

Docs PR: chroma-core/docs#173

---------

Signed-off-by: Joan Fontanals Martinez <[email protected]>

clients/js/src/embeddings/JinaEmbeddingFunction.ts

@@ -0,0 +1,46 @@
+import { IEmbeddingFunction } from "./IEmbeddingFunction";
+
+export class JinaEmbeddingFunction implements IEmbeddingFunction {
+  private model_name: string;
+  private api_url: string;
+  private headers: { [key: string]: string };
+
+  constructor({ jinaai_api_key, model_name }: { jinaai_api_key: string; model_name?: string }) {
+    this.model_name = model_name || 'jina-embeddings-v2-base-en';
+    this.api_url = 'https://api.jina.ai/v1/embeddings';
+    this.headers = {
+      Authorization: `Bearer ${jinaai_api_key}`,
+      'Accept-Encoding': 'identity',
+      'Content-Type': 'application/json',
+    };
+  }
+
+  public async generate(texts: string[]) {
+    try {
+      const response = await fetch(this.api_url, {
+        method: 'POST',
+        headers: this.headers,
+        body: JSON.stringify({
+          input: texts,
+          model: this.model_name,
+        }),
+      });
+
+      const data = (await response.json()) as { data: any[]; detail: string };
+      if (!data || !data.data) {
+        throw new Error(data.detail);
+      }
+
+      const embeddings: any[] = data.data;
+      const sortedEmbeddings = embeddings.sort((a, b) => a.index - b.index);
+
+      return sortedEmbeddings.map((result) => result.embedding);
+    } catch (error) {
+      if (error instanceof Error) {
+        throw new Error(`Error calling Jina AI API: ${error.message}`);
+      } else {
+        throw new Error(`Error calling Jina AI API: ${error}`);
+      }
+    }
+  }
+}

clients/js/src/index.ts

@@ -36,3 +36,4 @@ export {
     DeleteParams
 } from './types';
 export { HuggingFaceEmbeddingServerFunction } from './embeddings/HuggingFaceEmbeddingServerFunction';
+export { JinaEmbeddingFunction } from './embeddings/JinaEmbeddingFunction';