Move providers from elixir_sense (#1068)

* hover provider moved over from elixir_sense

* definition provider moved over

* implementation provider moved over

* location moved over

* references provider moved over

* signature moved over

* completions provider moved over

* move more tests

* expand macro moved over

* fix some tests

* fix some tests

* make order predictable

* fix some tests on 1.12

* format

Author: lukaszsamson

VERSION

@@ -1 +1 @@
-0.20.0
+0.21.0-dev

apps/debug_adapter/lib/debug_adapter/server.ex

@@ -1315,7 +1315,7 @@ defmodule ElixirLS.DebugAdapter.Server do
       metadata = %ElixirSense.Core.Metadata{}
 
       results =
-        ElixirSense.Providers.Suggestion.Complete.complete(prefix, env, metadata, {1, 1})
+        ElixirLS.Utils.CompletionEngine.complete(prefix, env, metadata, {1, 1})
         |> Enum.map(&ElixirLS.DebugAdapter.Completions.map/1)
 
       %{"targets" => results}