gtest: Enable GTests in CI workflows #314

Job	Run time
build-macos (macos-latest)	28s
build-macos (flyci-macos-large-latest-m2)	25s
Build on ubuntu-20.04 g++-9	1m 7s
Build on ubuntu20.04 aarch64 g++-9	7m 58s
Build on ubuntu-20.04 g++-10	1m 10s
Build on ubuntu20.04 aarch64 g++-10	7m 45s
Build on ubuntu-22.04 g++-11	1m 0s
Build static on ubuntu-latest	1m 5s
Build on ubuntu22.04 aarch64 g++-12	8m 49s
Build on ubuntu-22.04 g++-12	1m 15s
Build on ubuntu22.04 aarch64 g++-13	5m 53s
Build on ubuntu-24.04 g++-13	1m 25s
build-windows	2m 2s
Build on ubuntu22.04 aarch64 g++-14	4m 51s
Build on ubuntu-24.04 g++-14	2m 2s
Build on ubuntu20.04 aarch64 clang-9	12m 14s
Build on ubuntu-20.04 clang-10	58s
Build on ubuntu20.04 aarch64 clang-10	12m 12s
Build on ubuntu-20.04 clang-11	1m 4s
Build on ubuntu22.04 aarch64 clang-14	12m 37s
Build on ubuntu-22.04 clang-12	1m 17s
Build on ubuntu22.04 armv7 g++	7m 58s
Build on ubuntu-22.04 clang-13	1m 0s
Build on ubuntu22.04 ppc64le g++-12	8m 24s
Build on ubuntu-22.04 clang-14	1m 7s
Build on ubuntu22.04 s390x g++-12	6m 55s
Build on ubuntu-22.04 clang-15	1m 1s
Build on ubuntu22.04 riscv64 g++-12	6m 52s
Build on ubuntu-24.04 clang-16	54s
Build on ubuntu-24.04 clang-17	1m 6s
Build on ubuntu-24.04 clang-18	57s
	2h 3m 51s

Provide feedback