feat: API Improvements

[maximkrouk]

• Rename ShyView to SecureContainerView
• Add ShyView properyWrapper
• Add runtimeWarning IncompatibilityHandler
• Add SwiftUI support
• Update example
• Add swiftpackageindex docc docs
• Update CI workflow
• Update podspec

Note:

For some reason now ShyView doesn't work (as well as SecureContainerView) 🤡

UIKit tests do not pass, but SwiftUI tests of the backport work in inverse, when isPrivacySensitive == false, the content is hidden and it is shown otherwise Didn't have time to finish it now, so maybe you can take a look, or I'll figure it out later

• PR contains breaking changes, so I updated podspec to 0.3.0
• Documentation requires adding the package to swiftpackageindex.com after the PR is merged