[UR] Verify that every source file includes an appropriate license #1990

Job	Run time
Build - MacOS (macos-12)	7m 51s
Build - MacOS (macos-13)	6m 47s
Build - Windows (windows-2019, Debug)	11m 8s
Build - Windows (windows-2019, Release)	11m 42s
Build - Windows (windows-2022, Debug)	11m 35s
Build - Windows (windows-2022, Release)	13m 43s
Build - Ubuntu (ubuntu-20.04, Debug, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENABLE...	10m 48s
Build - Ubuntu (ubuntu-20.04, Debug, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENABLE...	11m 44s
Build - Ubuntu (ubuntu-20.04, Release, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENAB...	11m 43s
Build - Ubuntu (ubuntu-20.04, Release, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENAB...	11m 26s
Build - Ubuntu (ubuntu-22.04, Debug, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENABLE...	10m 26s
Build - Ubuntu (ubuntu-22.04, Debug, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENABLE...	11m 30s
Build - Ubuntu (ubuntu-22.04, Release, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENAB...	14m 39s
Build - Ubuntu (ubuntu-22.04, Release, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF, -DUMF_ENAB...	15m 44s
Build - Ubuntu (ubuntu-22.04, Release, clang, clang++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=OFF)	13m 33s
Build - Ubuntu (ubuntu-22.04, Release, gcc, g++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=ON)	11m 57s
Build - Ubuntu (ubuntu-22.04, Release, clang, clang++, -DVAL_USE_LIBBACKTRACE_BACKTRACE=ON)	16m 49s
Build - Ubuntu (ubuntu-20.04, Release, gcc-7, g++-7)	14m 41s
	3h 37m 46s

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