Sets up HLS in helix.

Removes a `.env` that was accidentally committed at some point.

Author: qxjit

.env

@@ -0,0 +1,6 @@
+[language-server.haskell-language-server]
+command = "docker"
+args = ["compose", "run", "--rm", "-T", "dev", "haskell-language-server-wrapper", "--lsp"]
+
+[language-server.haskell-language-server.config]
+haskell.formattingProvider = "fourmolu"