Add OCaml (#598)

* Add OCaml

Add OCaml according to https://ocaml.org/install#linux_mac_bsd

I included also the development environment (LSP and some tools) as I figured this would be actually omakase but I can also remove it if we want to keep it clean.

* small fix

bin/omarchy-install-dev-env

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [[ -z "$1" ]]; then
-  echo "Usage: omarchy-instal-dev-env <ruby|node|bun|go|laravel|python|elixir|rust|java>" >&2
+  echo "Usage: omarchy-instal-dev-env <ruby|node|bun|go|laravel|python|elixir|rust|java|ocaml>" >&2
   exit 1
 fi
 
@@ -48,4 +48,11 @@ java)
   echo -e "Installing Java...\n"
   mise use --global java@latest
   ;;
+ocaml)
+  echo -e "Installing OCaml...\n"
+  bash -c "$(curl -fsSL https://raw.githubusercontent.com/ocaml/opam/master/shell/install.sh)"
+  opam init --yes
+  eval "$(opam env)"
+  opam install ocaml-lsp-server odoc ocamlformat utop --yes
+  ;;
 esac