#218 switch off zlib examples

When building zlib, the example and minigzip targets need to have the -lz flag, but this is hardly achievable from mjpc through grpc. Because zlib is only a transitive dependency, I recommend to rather not build zlib examples. https://github.com/madler/zlib/blob/9404df5a1f35866d441e8033b34186ca42962ea9/CMakeLists.txt#L198

Author: keszegrobert

mjpc/grpc/CMakeLists.txt

@@ -37,7 +37,7 @@ findorfetch(
 
 find_package(ZLIB REQUIRED)
 set(gRPC_ZLIB_PROVIDER "package" CACHE INTERNAL "")
-
+set(ZLIB_BUILD_EXAMPLES OFF)
 set(_PROTOBUF_LIBPROTOBUF libprotobuf)
 set(_REFLECTION grpc++_reflection)
 set(_PROTOBUF_PROTOC $<TARGET_FILE:protoc>)