Official exported packages for large projects?

[tjysdsg]

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Is your feature request related to a problem? Please describe.
It takes forever to install llvm on my machine, because of the project is too large.

Proposed solution
Create a repository containing prebuilt projects, and users can download them and install them using the import command.

Since the CI will build and test all the packages, why not add an export command and publish the built packages publicly?

Additional context
I understand that maintaining vcpkg itself is probably a huge project, but I think adding this feature will provide huge improvement on the build/install time

[JackBoosY]

I think we will never provide pre-compiled binaries.

[PhoebeHui]

Duplicated to #10178