Adopt Tuist to manage the project

[pepicrft]

Tuist removes the intricacies, inconvenience, and slowness of working at scale with Xcode. This PR migrates CodeEdit to use Tuist.

• [x] Extract the build settings into .xcconfig files using Tuist's command for that
• [x] Extract the dependencies into Tuist/Package.swift, ensuring that they align with the current project's requirements.
• [x] Remove InspectorSidebarToolbarTop.swift, FindNavigatorResultFileItem.swift, and NavigatorSidebarToolbar.swift, which don't seem to be used anywhere.
• [ ] Adjust the CI pipelines to use Tuist
• [ ] Update the documentation to mention the Tuist requirement
• [ ] Manual testing by someone familiar with all the project workflows and the app itself