Add components to Phoenix dirs (#757)

https://github.com/phoenixframework/phoenix/blob/36639c3132a8063f604dade442238875d787d6af/installer/lib/phx_new/web.ex#L45-L56

Author: aptinio

apps/language_server/lib/language_server/providers/completion.ex

@@ -713,7 +713,8 @@ defmodule ElixirLS.LanguageServer.Providers.Completion do
               "plugs",
               "endpoints",
               "sockets",
-              "live"
+              "live",
+              "components"
             ] do
     if String.ends_with?(project_web_dir, "_web") do
       # by convention Phoenix doesn't use these folders as part of the module names

apps/language_server/test/providers/completion_test.exs

@@ -1289,7 +1289,8 @@ defmodule ElixirLS.LanguageServer.Providers.CompletionTest do
         {"MyProjectWeb.MyChannel", "channels/my_channel.ex"},
         {"MyProjectWeb.MyEndpoint", "endpoints/my_endpoint.ex"},
         {"MyProjectWeb.MySocket", "sockets/my_socket.ex"},
-        {"MyProjectWeb.MyviewLive.MyComponent", "live/myview_live/my_component.ex"}
+        {"MyProjectWeb.MyviewLive.MyComponent", "live/myview_live/my_component.ex"},
+        {"MyProjectWeb.MyComponent", "components/my_component.ex"}
       ]
       |> Enum.each(fn {expected_module_name, partial_path} ->
         path = "some/path/my_project/lib/my_project_web/#{partial_path}"