[Feature] add google ai embedder (#1019)

Co-authored-by: Deven Patel <deven298@yahoo.com>

docs/components/embedding-models.mdx

@@ -8,6 +8,7 @@ Embedchain supports several embedding models from the following providers:
 
 <CardGroup cols={4}>
   <Card title="OpenAI" href="#openai"></Card>
+  <Card title="GoogleAI" href="#google-ai"></Card>
   <Card title="Azure OpenAI" href="#azure-openai"></Card>
   <Card title="GPT4All" href="#gpt4all"></Card>
   <Card title="Hugging Face" href="#hugging-face"></Card>
@@ -44,6 +45,34 @@ embedder:
 
 </CodeGroup>
 
+## Google AI
+
+To use Google AI embedding function, you have to set the `GOOGLE_API_KEY` environment variable. You can obtain the Google API key from the [Google Maker Suite](https://makersuite.google.com/app/apikey)
+
+<CodeGroup>
+```python main.py
+import os
+from embedchain import Pipeline as App
+
+os.environ["GOOGLE_API_KEY"] = "xxx"
+
+app = App.from_config(config_path="config.yaml")
+```
+
+```yaml config.yaml
+embedder:
+  provider: google
+  config:
+    model: 'models/embedding-001'
+    task_type: "retrieval_document"
+    title: "Embeddings for Embedchain"
+```
+</CodeGroup>
+<br/>
+<Note>
+For more details regarding the Google AI embedding model, please refer to the [Google AI documentation](https://ai.google.dev/tutorials/python_quickstart#use_embeddings).
+</Note>
+
 ## Azure OpenAI
 
 To use Azure OpenAI embedding model, you have to set some of the azure openai related environment variables as given in the code block below:

docs/components/llms.mdx

@@ -72,7 +72,6 @@ To use Google AI model, you have to set the `GOOGLE_API_KEY` environment variabl
 import os
 from embedchain import Pipeline as App
 
-os.environ["OPENAI_API_KEY"] = "sk-xxxx"
 os.environ["GOOGLE_API_KEY"] = "xxx"
 
 app = App.from_config(config_path="config.yaml")
@@ -96,6 +95,13 @@ llm:
     temperature: 0.5
     top_p: 1
     stream: false
+
+embedder:
+  provider: google
+  config:
+    model: 'models/embedding-001'
+    task_type: "retrieval_document"
+    title: "Embeddings for Embedchain"
 ```
 </CodeGroup>