OMPT Target Offload Support (#17)

- Porting from https://github.com/ROCm/omnitrace/pull/411
- Improve OMPT support
- Add OpenMP target example to testing
- Update Timemory submodule to use ROCm/Timemory rather than NERSC/Timemory
- Update `actions/upload-artifacts` to v4
- Standardize the `cmake_minimum_required` to 3.18.4 across workflows, project, and examples
- Updated Ubuntu 20.04 workflows

[ROCm/rocprofiler-systems commit: 7dce5926a7]

projects/rocprofiler-systems/scripts/run-ci.sh

@@ -207,7 +207,7 @@ EOF
 verbose-run cd ${BINARY_DIR}
 
 cat << EOF > dashboard.cmake
-cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18.4 FATAL_ERROR)
 
 include("\${CMAKE_CURRENT_LIST_DIR}/CTestCustom.cmake")
 

projects/rocprofiler-systems/scripts/test-find-package.sh

@@ -112,7 +112,7 @@ verbose-run cp -v -r ${EXAMPLE_DIR}/${EXAMPLE_NAME}/* ${SOURCE_DIR}/
 verbose-run pushd ${SOURCE_DIR}
 
 cat << EOF > CMakeLists.txt
-cmake_minimum_required(VERSION 3.16.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18.4.0 FATAL_ERROR)
 
 project(test LANGUAGES C CXX)
 

projects/rocprofiler-systems/scripts/write-rocprof-sys-install.cmake

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.18.4)
 
 if(NOT DEFINED ROCPROFSYS_VERSION)
     file(READ "${CMAKE_CURRENT_LIST_DIR}/../VERSION" FULL_VERSION_STRING LIMIT_COUNT 1)