Adding the gs-datagen project link to oss

src/oss.html

@@ -93,6 +93,12 @@ Maven/Ivy repositories at this time.</p>
 <dd>Opaque type (<code>Blob</code>) and tools (e.g. encoding) for "blobs" -
     arrays of bytes.</dd>
 
+<dt><a href="https://git.garrity.co/garrity-software/gs-datagen">gs-datagen</a>
+    (Scala 3) (Library)</dt>
+<dd>Random data generation library for Scala 3. Intended for use in tests, but
+    not limited to that case. Provides a composable type for generators and
+    several standard generators.</dd>
+
 </dl>
 </section>