Add FXIOS-11132 [Homepage] [Message] initial state + view for message card

[cyndichin]

📜 Tickets

Jira ticket
Github issue

💡 Description

Add initial view and state for the message card section for the new homepage.

• Added MessageCardState with mock string
• Copied over previous homepage message card view and made modifications to use state instead of view model
• Add message section to diffable and add configs for compositional layout + message card cells

📝 Checklist

You have to check all boxes before merging

• Filled in the above information (tickets numbers and description of your work)
• Updated the PR name to follow our PR naming guidelines
• Wrote unit tests and/or ensured the tests suite is passing
• When working on UI, I checked and implemented accessibility (minimum Dynamic Text and VoiceOver)
• If needed, I updated documentation / comments for complex code and public methods
• If needed, added a backport comment (example @Mergifyio backport release/v120)

Screenshot

iPhone

[cyndichin]

copied most of this class over, mainly changed this method from the original in LegacyHomepageMessageCardCell. Also moved the shadow constants used in setupShadow here instead of calling it from HomepageViewModel

Previous implementation

func configure(viewModel: HomepageMessageCardViewModel, theme: Theme) {
        self.viewModel = viewModel

        if let message = viewModel.getMessage(for: .newTabCard) {
            applyGleanMessage(message)
        }

        applyTheme(theme: theme)
        ctaButton.applyTheme(theme: theme)
    }
    ```
   
 

[mobiletest-ci-bot]

	Messages
📖	Project coverage: 33.49%
📖	Edited 10 files
📖	Created 3 files

Client.app: Coverage: 32.31

File	Coverage
HomepageState.swift	92.94%	✅
HomepageSectionType.swift	41.07%	⚠️
HomepageMessageCardCell.swift	0.0%	⚠️
HomepageMessageCardViewModel.swift	77.01%	✅
HomepageSectionLayoutProvider.swift	48.81%	⚠️
HomepageDiffableDataSource.swift	100.0%	✅
MessageCardState.swift	97.78%	✅
HomepageViewController.swift	45.65%	⚠️
HomepageMessageCard.swift	65.09%	✅

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