set MutuallyExclusiveGroup available at package level

src/codemagic/cli/__init__.py

@@ -6,6 +6,7 @@
 from .argument import ArgumentProperties
 from .argument import CommonArgumentTypes
 from .argument import EnvironmentArgumentValue
+from .argument import MutuallyExclusiveGroup
 from .argument import TypedCliArgument
 from .cli_app import CliApp
 from .cli_app import CliAppException

src/codemagic/cli/argument/__init__.py

@@ -4,6 +4,7 @@
 from .argument_formatter import ArgumentFormatter
 from .argument_parser_builder import ArgumentParserBuilder
 from .argument_properties import ArgumentProperties
+from .argument_properties import MutuallyExclusiveGroup
 from .common_argument_types import CommonArgumentTypes
 from .typed_cli_argument import EnvironmentArgumentValue
 from .typed_cli_argument import TypedCliArgument

src/codemagic/cli/argument/argument_parser_builder.py

@@ -14,8 +14,8 @@
     from argparse import _ArgumentGroup as ArgumentGroup
     from argparse import _SubParsersAction as SubParsersAction
 
+    from codemagic.cli import MutuallyExclusiveGroup
     from codemagic.cli.argument import ActionCallable
-    from codemagic.cli.argument.argument_properties import MutuallyExclusiveGroup
     from codemagic.cli.cli_app import CliApp