Improve first-run UX

- Replace LoginPage with step-by-step approach to support different login flows
- Implement login using SSO

res.qrc

@@ -2,7 +2,6 @@
     <qresource prefix="/">
         <file>qml/main.qml</file>
         <file>imports/NeoChat/Page/qmldir</file>
-        <file>imports/NeoChat/Page/LoginPage.qml</file>
         <file>imports/NeoChat/Page/LoadingPage.qml</file>
         <file>imports/NeoChat/Page/RoomListPage.qml</file>
         <file>imports/NeoChat/Page/RoomPage.qml</file>
@@ -14,6 +13,7 @@
         <file>imports/NeoChat/Page/StartChatPage.qml</file>
         <file>imports/NeoChat/Page/ImageEditorPage.qml</file>
         <file>imports/NeoChat/Page/DevicesPage.qml</file>
+        <file>imports/NeoChat/Page/WelcomePage.qml</file>
         <file>imports/NeoChat/Component/qmldir</file>
         <file>imports/NeoChat/Component/ChatTextInput.qml</file>
         <file>imports/NeoChat/Component/AutoMouseArea.qml</file>
@@ -32,6 +32,15 @@
         <file>imports/NeoChat/Component/Timeline/AudioDelegate.qml</file>
         <file>imports/NeoChat/Component/Timeline/FileDelegate.qml</file>
         <file>imports/NeoChat/Component/Timeline/ImageDelegate.qml</file>
+        <file>imports/NeoChat/Component/Login/qmldir</file>
+        <file>imports/NeoChat/Component/Login/LoginStep.qml</file>
+        <file>imports/NeoChat/Component/Login/Login.qml</file>
+        <file>imports/NeoChat/Component/Login/Password.qml</file>
+        <file>imports/NeoChat/Component/Login/LoginRegister.qml</file>
+        <file>imports/NeoChat/Component/Login/Loading.qml</file>
+        <file>imports/NeoChat/Component/Login/Homeserver.qml</file>
+        <file>imports/NeoChat/Component/Login/LoginMethod.qml</file>
+        <file>imports/NeoChat/Component/Login/Sso.qml</file>
         <file>imports/NeoChat/Setting/Setting.qml</file>
         <file>imports/NeoChat/Setting/qmldir</file>
         <file>imports/NeoChat/Setting/Palette.qml</file>