[vcpkg toolchain] Fix paths with special characters

[JackBoosY]

When using execute_process and add_custom_command, the path included in the command line with special characters will break the execution process.

Fixes #24447.

[JackBoosY]

@ResearchDaniel Can you please test this PR?

Thanks.

[dg0yt]

This change doesn't make sense. Fortunately, it failed early.

[ResearchDaniel]

I think that the quotes need to be escaped inside of the other quotes? For example:
"\”${Z_VCPKG_BOOTSTRAP_SCRIPT}\"”

Edit: The suggestion by @dg0yt to add the VERBATIM option to add_custom_command is better

[JackBoosY]

@ResearchDaniel I think now it's okay?

[ResearchDaniel]

@ResearchDaniel I think now it's okay?

tested your branch and it seems to work.

[BillyONeal]

This change doesn't make sense. Fortunately, it failed early.

Do you think the current one makes sense?

[dg0yt]

This change doesn't make sense. Fortunately, it failed early.

Do you think the current one makes sense?

Well, now it is what I proposed, and what CMake doc recommends.
(What didn't make sense was removing quotes which were needed for CMake syntax.)

[BillyONeal]

Well, now it is what I proposed, and what CMake doc recommends.

Sorry, I didn't see such a proposal.

[BillyONeal]

@JackBoosY Thanks for the fix :)