fix Purescript LSP server in example

In Emacs with Projectile the `purescript-language-server` was not finding `example/spago.dhall`. The solution is to
duplicate `spago.dhall` purescript/spago#692 (comment) so it is found at the root
of the project.

.gitignore

@@ -27,4 +27,16 @@ stack.yaml
 example/**/*.js
 
 .direnv
-result
+result
+
+
+bower_components/
+node_modules/
+.pulp-cache/
+output/
+generated-docs/
+.psc-package/
+.psc*
+.purs*
+.psa*
+.spago

spago.dhall

@@ -0,0 +1,23 @@
+{ name = "purescript-bridge-example"
+, dependencies =
+  [ "console"
+  , "effect"
+  , "foreign-generic"
+  , "profunctor-lenses"
+  , "aff"
+  , "affjax"
+  , "affjax-web"
+  , "argonaut-aeson-generic"
+  , "ordered-collections"
+  , "argonaut-codecs"
+  , "argonaut-generic"
+  , "either"
+  , "foldable-traversable"
+  , "foreign-object"
+  , "maybe"
+  , "newtype"
+  , "prelude"
+  ]
+, packages = ./example/packages.dhall
+, sources = [ "example/src/**/*.purs", "example/test/**/*.purs" ]
+}