Update nvtx3 link in cmake (rapidsai#2246)

- Link to `nvtx3` instead of deprecated `nvToolsExt`
- Use `LAZY` cmake install message, to avoid flooding the console with all the headers name when they are left untouched.

Authors:
  - Micka (https://github.com/lowener)
  - Corey J. Nolet (https://github.com/cjnolet)

Approvers:
  - Robert Maynard (https://github.com/robertmaynard)

URL: rapidsai#2246

cpp/CMakeLists.txt

@@ -278,7 +278,7 @@ else()
       "\" OFF)"
       [=[
 
-target_link_libraries(raft::raft INTERFACE $<$<BOOL:${RAFT_NVTX}>:CUDA::nvToolsExt>)
+target_link_libraries(raft::raft INTERFACE $<$<BOOL:${RAFT_NVTX}>:CUDA::nvtx3>)
 target_compile_definitions(raft::raft INTERFACE $<$<BOOL:${RAFT_NVTX}>:NVTX_ENABLED>)
 
   ]=]