Add tutorial for creating embeddings over AOI

Author: yellowcap

docs/_toc.yml

@@ -36,6 +36,8 @@ parts:
       file: finetune/regression
     - title: Finetunig on an embeddings database
       file: finetune/finetune-on-embeddings
+    - title: Create embeddings over AOI
+      file: tutorials/create-embeddings-over-aoi.ipynb
 - caption: About Clay
   chapters:
     - title: GitHub