Move completion manager plugin to separate folder

setup.py

@@ -278,7 +278,8 @@ def run(self):
 spyder_plugins_entry_points = [
     'appearance = spyder.plugins.appearance.plugin:Appearance',
     'breakpoints = spyder.plugins.breakpoints.plugin:Breakpoints',
-    'code_completion = spyder.plugins.completion.plugin:CompletionManager',
+    ('code_completion = spyder.plugins.completion.manager.plugin:'
+     'CompletionManager'),
     'core = spyder.plugins.core.plugin:Core',
     'editor = spyder.plugins.editor.plugin:Editor',
     'explorer = spyder.plugins.explorer.plugin:Explorer',

spyder/app/mainwindow.py

@@ -1145,7 +1145,7 @@ def create_edit_action(text, tr_text, icon):
 
         # Code completion client initialization
         self.set_splash(_("Starting code completion manager..."))
-        from spyder.plugins.completion.plugin import CompletionManager
+        from spyder.plugins.completion.manager.plugin import CompletionManager
         self.completions = CompletionManager(self)
 
         # Outline explorer widget

spyder/plugins/editor/widgets/codeeditor.py

@@ -74,7 +74,7 @@
 # from spyder.plugins.editor.utils.folding import IndentFoldDetector, FoldScope
 from spyder.plugins.editor.utils.kill_ring import QtKillRing
 from spyder.plugins.editor.utils.languages import ALL_LANGUAGES, CELL_LANGUAGES
-from spyder.plugins.completion.decorators import (
+from spyder.plugins.completion.manager.decorators import (
     request, handles, class_register)
 from spyder.plugins.editor.widgets.base import TextEditBaseWidget
 from spyder.plugins.outlineexplorer.languages import PythonCFM

spyder/plugins/editor/widgets/tests/conftest.py

@@ -27,7 +27,7 @@
     qtbot_module, MainWindowMock, MainWindowWidgetMock)
 from spyder.plugins.editor.widgets.codeeditor import CodeEditor
 from spyder.plugins.editor.widgets.editor import EditorStack
-from spyder.plugins.completion.plugin import CompletionManager
+from spyder.plugins.completion.manager.plugin import CompletionManager
 from spyder.plugins.explorer.widgets.tests.conftest import create_folders_files
 from spyder.py3compat import PY2, to_text_string
 from spyder.widgets.findreplace import FindReplace

spyder/plugins/projects/plugin.py

@@ -42,7 +42,7 @@
 from spyder.plugins.projects.widgets.projectdialog import ProjectDialog
 from spyder.plugins.completion.languageserver import (
     LSPRequestTypes, FileChangeType, WorkspaceUpdateKind)
-from spyder.plugins.completion.decorators import (
+from spyder.plugins.completion.manager.decorators import (
     request, handles, class_register)