Add OpenVDB (and sub libraries) the new way

deps/Blosc/Blosc.cmake

@@ -0,0 +1,26 @@
+if(BUILD_SHARED_LIBS)
+    set(_build_shared ON)
+    set(_build_static OFF)
+else()
+    set(_build_shared OFF)
+    set(_build_static ON)
+endif()
+
+prusaslicer_add_cmake_project(Blosc
+    GIT_REPOSITORY https://github.com/Blosc/c-blosc.git
+    GIT_TAG e63775855294b50820ef44d1b157f4de1cc38d3e #v1.17.0
+    DEPENDS ${ZLIB_PKG}
+    PATCH_COMMAND       ${GIT_EXECUTABLE} reset --hard && ${GIT_EXECUTABLE} clean -df &&
+                        ${GIT_EXECUTABLE} apply --whitespace=nowarn ${CMAKE_CURRENT_LIST_DIR}/blosc-mods.patch
+    CMAKE_ARGS
+        -DCMAKE_POSITION_INDEPENDENT_CODE=ON
+        -DBUILD_SHARED=${_build_shared} 
+        -DBUILD_STATIC=${_build_static}
+        -DBUILD_TESTS=OFF 
+        -DBUILD_BENCHMARKS=OFF 
+        -DPREFER_EXTERNAL_ZLIB=ON
+)
+
+if (MSVC)
+    add_debug_dep(dep_Blosc)
+endif ()