[Storage] Add data plane Blob Storage swagger (Azure#15734)

* Try Blobs by itself with no root readme

* fixed snaphot typo

* custom words typo

* added missing custom words

Co-authored-by: tasherif-msft <[email protected]>

Author: tg-msft

CODEOWNERS

@@ -69,7 +69,7 @@
 /specification/servicebus/ @sazeesha @v-ajnava
 /specification/servicefabric/ @juhacket @samedder
 /specification/sql/ @jamestao @ericshape @apurvans
-/specification/storage/ @blueww @jasonyang-msft @xiaonlimsft
+/specification/storage/ @jasonyang-msft @xiaonlimsft @kasobol-msft
 /specification/storage/data-plane/ @kasobol-msft @seanmcc-msft
 /specification/storageimportexport/ @leoz-ms
 /specification/storagesync/ @ankushbindlish2