docs: add a reference to @lancedb/lance in the docs (#1166)

We aren't yet ready to switch over the examples since almost all JS
examples rely on embeddings and we haven't yet ported those over.
However, this makes it possible for those that are interested to start
using `@lancedb/lancedb`

docs/src/js/interfaces/AddDataOptions.md

@@ -0,0 +1,25 @@
+[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / AddDataOptions
+
+# Interface: AddDataOptions
+
+Options for adding data to a table.
+
+## Table of contents
+
+### Properties
+
+- [mode](AddDataOptions.md#mode)
+
+## Properties
+
+### mode
+
+• **mode**: ``"append"`` \| ``"overwrite"``
+
+If "append" (the default) then the new data will be added to the table
+
+If "overwrite" then the new data will replace the existing data in the table.
+
+#### Defined in
+
+[table.ts:36](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L36)