Move text URL check to the Haskell binary

slackbuilder.cabal

@@ -23,15 +23,19 @@ extra-source-files: CHANGELOG.md
 executable slackbuilder
     main-is:          Main.hs
 
-    -- Modules included in this executable, other than Main.
-    -- other-modules:
-
+    other-modules:
+        SlackBuilder.CommandLine
+        SlackBuilder.Updater
     default-extensions:
         OverloadedStrings
+        RecordWildCards
         TemplateHaskell
     build-depends:
         aeson ^>= 2.2.0,
         base ^>= 4.16.4.0,
+        bytestring ^>= 0.11.0,
+        modern-uri ^>= 0.3.6,
+        optparse-applicative ^>= 0.18.1,
         req ^>=3.13,
         text ^>= 2.0,
         unordered-containers ^>= 0.2.19,