DuckDB data connector documentation (#198)

* Added duckdb data connector documentation

* Real world example for duckdb data connector

* fix

* Update example

spiceaidocs/docs/data-connectors/duckdb.md

@@ -0,0 +1,43 @@
+---
+title: "DuckDB Data Connector"
+sidebar_label: "DuckDB Data Connector"
+description: "DuckDB Data Connector Documentation"
+---
+
+## Dataset Source
+
+To connect to a DuckDB [persistent database](https://duckdb.org/docs/connect/overview#persistent-database) as a data source, specify `duckdb` as the selector in the `from` value for the dataset.
+
+```yaml
+datasets:
+  - from: duckdb:database.schema.table
+    name: my_dataset
+```
+
+## Configuration
+
+The DuckDB data connector can be configured by providing the following `params`:
+
+- `open`: The name for the file to back the DuckDB database. `open` is a required parameter, and DuckDB run in the `file` mode to open the DuckDB database file.
+
+Configuration `params` are provided either in the top level `dataset` for a dataset source, or in the `acceleration` section for a data store.
+
+A generic example of DuckDB data connector configuration.
+
+```yaml
+datasets:
+  - from: duckdb:database.schema.table
+    name: my_dataset
+    params:
+      open: path/to/duckdb_file.duckdb
+```
+
+This example uses a DuckDB database file that is at location /my/path/
+
+```yaml
+datasets:
+  - from: duckdb:sample_data.nyc.rideshare
+    name: nyc_rideshare
+    params:
+      open: /my/path/my_database.db
+```