Elixir plugin: Install CoreServices on macOS to fix Phoenix LiveReload compilation

Author: clessg

plugins/elixir.json

@@ -1,9 +1,14 @@
 {
   "name": "elixir",
   "version": "0.0.1",
+  "packages": {
+    "darwin.apple_sdk.frameworks.CoreServices": {
+      "platforms": ["aarch64-darwin", "x86_64-darwin"]
+    }
+  },
   "env": {
     "MIX_HOME": "{{ .Virtenv }}/mix",
     "HEX_HOME": "{{ .Virtenv }}/hex",
     "ERL_AFLAGS": "-kernel shell_history enabled"
   }
-}
+}