Add playfab and sign in

Assets/PlayFabEditorExtensions.meta

Assets/PlayFabEditorExtensions/Editor.meta

Assets/PlayFabEditorExtensions/Editor/PlayFabEditor.cs

Assets/PlayFabEditorExtensions/Editor/PlayFabEditor.cs.meta

...FabEditorExtensions/Editor/PlayFabEditorExtensions.asmdef

...itorExtensions/Editor/PlayFabEditorExtensions.asmdef.meta

Assets/PlayFabEditorExtensions/Editor/Resources.meta

...torExtensions/Editor/Resources/PlayFabEditorPrefsSO.asset

...tensions/Editor/Resources/PlayFabEditorPrefsSO.asset.meta

...nsions/Editor/Resources/PlayFabUnitySdk.unitypackage.meta

Assets/PlayFabEditorExtensions/Editor/Scripts.meta

...ts/PlayFabEditorExtensions/Editor/Scripts/Components.meta

...EditorExtensions/Editor/Scripts/Components/ProgressBar.cs

...rExtensions/Editor/Scripts/Components/ProgressBar.cs.meta

...rExtensions/Editor/Scripts/Components/SubMenuComponent.cs

...nsions/Editor/Scripts/Components/SubMenuComponent.cs.meta

...orExtensions/Editor/Scripts/Components/TitleDataEditor.cs

...ensions/Editor/Scripts/Components/TitleDataEditor.cs.meta

...orExtensions/Editor/Scripts/Components/TitleDataViewer.cs

...ensions/Editor/Scripts/Components/TitleDataViewer.cs.meta