integrated haskell backend with elm-street

backend/package.yaml

@@ -19,10 +19,12 @@ extra-source-files:
 description:         Please see README.md
 
 dependencies:
+- aeson        >= 2.2.3  && < 2.3
 - base         >= 4.19.2 && < 4.20
 - blaze-html   >= 0.9.2  && < 0.10
 - blaze-markup >= 0.8.3  && < 0.9
 - directory    >= 1.3.8  && < 1.4
+- elm-street   >= 0.2.2  && < 0.3
 - http-types   >= 0.12.4 && < 0.13
 - scotty       >= 0.22   && < 0.23
 - text         >= 2.1.1  && < 2.2