Build and package shared flavor of experimental runtime

[mhegazy]

This unbreaks CI build after swiftlang/swift-installer-scripts#456 landed.

This change include:

• Extend matrix to build both static and dynamic version of the experimental sdk. Compiler options should correctly match build.ps1 now
• Update job names and artifact names to reflect the change
• Use cmake 3.29 for this job as it ran into the same issue with linker/driver flags
• A lot of file copying to get the layout in the shape the installer expect - we should stop doing this, it is ugly, brittle and not sustainable.
• For completeness build the new rtl msm's and the new shared rtl.shared.msi though they are not used.

Downstream successful job: https://github.com/thebrowsercompany/swift-build/actions/runs/17520106849