redesign welcome view

Ring/Ring.xcodeproj/project.pbxproj

Ring/Ring/Constants/Generated/Images.swift

Ring/Ring/Constants/Generated/Strings.swift

Ring/Ring/Extensions/UIColor+Ring.swift

...res/Conversations/SmartList/SmartlistViewController.swift

...alkthrough/LinkDevice/LinkDeviceViewController.storyboard

...ures/Walkthrough/Welcome/WelcomeViewController.storyboard

...ing/Features/Walkthrough/WelcomeViewController.storyboard

Ring/Ring/Features/Walkthrough/WelcomeViewController.swift

Ring/Ring/Helpers/AppInfoHelper.swift

Ring/Ring/Resources/Colors.xcassets/Contents.json

...ces/Colors.xcassets/jamiButtonDark.colorset/Contents.json

...es/Colors.xcassets/jamiButtonLight.colorset/Contents.json

...ors.xcassets/jamiButtonWithOpacity.colorset/Contents.json

...cassets/background_login.imageset/BG-DarkMode-ID_Jami.png

...assets/background_login.imageset/BG-LightMode-ID_Jami.png

...s/Images.xcassets/background_login.imageset/Contents.json

Ring/Ring/Resources/en.lproj/Localizable.strings