Update README and improve simple/dev deps setup (#846)

* Revisit README structure
* Add swagger.json to repo and link to visualize the file
* Allow to select "persistent" simplequeue/simplestorage/simplememory in
setup tool

Author: dluc

.github/_typos.toml

@@ -21,6 +21,7 @@ extend-exclude = [
 [default.extend-words]
 ACI = "ACI" # Azure Container Instance
 IIF = "IIF" # SQL Function
+Contextful = "Contextful" # Used in swagger.json
 
 [default.extend-identifiers]
 ags = "ags" # Azure Graph Service