Confirm dialog

[catreedle]

Contributor checklist

• This pull request is on a separate branch and not the main branch
• I have tested my code with the xcodebuild and swiftlint --strict commands as directed in the testing section of the contributing guide

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Description

This PR adds a reusable confirmation dialog for translation source–related actions and integrates it into the language source change flow.

• Add ConfirmDialogView for confirming download translation source
• Add parameters for ConfirmDialogView
• Navigate to Translation language source on clicking Change language
• Add confirmation dialog on changing source language

Related issue

• Closes Add tooltip to check translation source language #559

[github-actions]

Thank you for the pull request! 💙

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[github-actions]

Maintainer Checklist

The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

• Tests for changes have been written and the CI unit test, linting and formatting workflows within the PR checks do not indicate new errors in the files changed

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[andrewtavis]

praise: All's working really well here, @catreedle! This is a perfect implementation given the current state of the app. Let's finalize the texts as soon as we can in #563 and #564 so that we don't have the xcstrings files being edited all the time anymore 🤔 I'll make issues for the rest of the work needed for the data download UI 🥳

[andrewtavis]

Making it that this PR will close #559. We can have moving it to the correct page be a part of the data download UI issue :)