[blosc] enable dependent ports to use debug builds

[tmpvar]

refs: #3601

The bulk of this work is to utilize the standard vcpkg find_package code to find the correct binaries in both Release and Debug modes.

When attempting to perform a debug build on an application that depends on openvdb the result was a run time failure. This is due to blosc not providing a mechanism to select its debug build and no way for it to find debug builds of its dependencies.

(you can ignore the issue with Half-2_3.dll as that is being worked on in #7636)

[tmpvar]

I don't see how this is failing .. perhaps this needs to be rebased on the openvdb changes in #7636 ( I did touch the FindBlosc.cmake over there)

[Rastaban]

Usually this type of failure is due to the case-sensitive filesystem on the Linux VMs.

CMake Error at ports/blosc/portfile.cmake:56 (file):
  file COPY cannot find
  "/home/vcpkg/myagent/_work/4/s/ports/blosc/FindBlosc.cmake".
Call Stack (most recent call first):
  scripts/ports.cmake:74 (include)

Could you also bump the version in the CONTROL file to 1.17.0-1? It helps the vcpkg update command.

[tmpvar]

@Rastaban thanks for the tip - curious where you found that error.

I've bumped the control file as suggested and ended up renaming Findblosc.cmake to FindBlosc.cmake as that is the casing used throughout vcpkg https://github.com/microsoft/vcpkg/search?q=findblosc&unscoped_q=findblosc