Add configs to VectorDB docs (#1699)

docs/components/vectordbs/config.mdx

@@ -0,0 +1,72 @@
+## What is Config?
+
+Config in mem0 is a dictionary that specifies the settings for your vector database. It allows you to customize the behavior and connection details of your chosen vector store.
+
+## How to Define Config
+
+The config is defined as a Python dictionary with two main keys:
+- `vector_store`: Specifies the vector database provider and its configuration
+  - `provider`: The name of the vector database (e.g., "chroma", "pgvector", "qdrant")
+  - `config`: A nested dictionary containing provider-specific settings
+
+## How to Use Config
+
+Here's a general example of how to use the config with mem0:
+
+```python
+import os
+from mem0 import Memory
+
+os.environ["OPENAI_API_KEY"] = "sk-xx"
+
+config = {
+    "vector_store": {
+        "provider": "your_chosen_provider",
+        "config": {
+            # Provider-specific settings go here
+        }
+    }
+}
+
+m = Memory.from_config(config)
+m.add("Your text here", user_id="user", metadata={"category": "example"})
+```
+
+## Why is Config Needed?
+
+Config is essential for:
+1. Specifying which vector database to use.
+2. Providing necessary connection details (e.g., host, port, credentials).
+3. Customizing database-specific settings (e.g., collection name, path).
+4. Ensuring proper initialization and connection to your chosen vector store.
+
+## Master List of All Params in Config
+
+Here's a comprehensive list of all parameters that can be used across different vector databases:
+
+| Parameter | Description |
+|-----------|-------------|
+| `collection_name` | Name of the collection |
+| `embedding_model_dims` | Dimensions of the embedding model |
+| `client` | Custom client for the database |
+| `path` | Path for the database |
+| `host` | Host where the server is running |
+| `port` | Port where the server is running |
+| `user` | Username for database connection |
+| `password` | Password for database connection |
+| `dbname` | Name of the database |
+| `url` | Full URL for the server |
+| `api_key` | API key for the server |
+| `on_disk` | Enable persistent storage |
+
+## Customizing Config
+
+Each vector database has its own specific configuration requirements. To customize the config for your chosen vector store:
+
+1. Identify the vector database you want to use from [supported vector databases](./dbs).
+2. Refer to the `Config` section in the respective vector database's documentation.
+3. Include only the relevant parameters for your chosen database in the `config` dictionary.
+
+## Supported Vector Databases
+
+For detailed information on configuring specific vector databases, please visit the [Supported Vector Databases](./dbs) section. There you'll find individual pages for each supported vector store with provider-specific usage examples and configuration details.