[cmake][install] Install minor fix

[hiergaut]

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• The commit message follows our guidelines (see CONTRIBUTING)
• Tests for the changes have been added (for bug fixes / features)
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• What kind of change does this PR introduce?

  • bug fix
  • feature
  • docs update
  • other:

• What is the current behavior? (You can also link to an open issue here)
  Install from external project is broken

• What is the new behavior (if this is a feature change)?
  Able to install hub for Win32 static only project, and dll only.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

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[hiergaut]

Ready for review.

[hiergaut]

Needs #42

[hiergaut]

This PR will fix export features for x64, UWP-Win32, UWP-ARM64 installation for UnityViewer