ci(node): check docs in CI (#2084)

* Make `npm run docs` fail if there are any warnings. This will catch
items missing from the API reference.
* Add a check in our CI to make sure `npm run dos` runs without warnings
and doesn't generate any new files (indicating it might be out-of-date.
* Hide constructors that aren't user facing.
* Remove unused enum `WriteMode`.

Closes #2068

docs/src/js/interfaces/Version.md

@@ -0,0 +1,31 @@
+[**@lancedb/lancedb**](../README.md) • **Docs**
+
+***
+
+[@lancedb/lancedb](../globals.md) / Version
+
+# Interface: Version
+
+## Properties
+
+### metadata
+
+```ts
+metadata: Record<string, string>;
+```
+
+***
+
+### timestamp
+
+```ts
+timestamp: Date;
+```
+
+***
+
+### version
+
+```ts
+version: number;
+```