Is your feature request related to a problem? Please describe.
Open source the implementation of dxil.dll for open-sourcing-dxil-validator-hash

Describe the solution you'd like
Implement the solution in two steps:

Refactor the validator to a static library.
Open source dxil.dll with the static library validator.

Describe alternatives you've considered
An alternative approach is to open source dxil.dll first and then refactor. However, this would require refactoring the validator code twice.

Context
Open sourcing dxil.dll will introduce another validator to the repository, causing duplication with the existing validator. Refactoring the validator to a static library and sharing the code will eliminate this duplication. However, we cannot introduce new code with style issues into the repository. Therefore, refactoring should be done first, followed by open sourcing dxil.dll.