curl.exe not available on plain Windows Server 2016 (x64)

**Describe the bug** When trying to run vcpkg on a Windows Server 2016 (x64), I get error `error : calling CreateProcessW failed with 2 (The system cannot find the file specified.)` whenever an asset is fetched local or remote. The reason is that Windows Server 2016 does not contain "curl.exe" per default. **Environment** - OS: Windows Server 2016 (x64) - Compiler: VS 2022 **To Reproduce** Steps to reproduce the behavior: 1. Plain Windows Server 2016 (x64) with VS 2022 2. Setup vcpkg and try to install any package **Expected behavior** No error. (vcpkg shoul bring its own curl.exe (when it's not present) or use another way to fetch assets) **Failure logs** `error : calling CreateProcessW failed with 2 (The system cannot find the file specified.)` **Additional context** No additional context