Add XML reporter and approval tests #370

Job	Run time
Ubuntu GCC Release	2m 39s
Ubuntu GCC Debug	1m 42s
Ubuntu GCC noexcept Release	1m 44s
Ubuntu GCC noexcept Debug	1m 10s
Ubuntu GCC notime Release	2m 18s
Ubuntu GCC notime Debug	1m 6s
Ubuntu GCC nounity Release	2m 7s
Ubuntu GCC nounity Debug	1m 23s
Ubuntu Clang Release	2m 2s
Ubuntu Clang Debug	1m 22s
Ubuntu Clang noexcept Release	2m 11s
Ubuntu Clang noexcept Debug	1m 13s
Windows 32 Release	4m 56s
Windows 32 Debug	2m 31s
Windows 64 Release	5m 42s
Windows 64 Debug	2m 44s
Windows 64 noexcept Release	6m 12s
Windows 64 noexcept Debug	2m 27s
MacOS Release	3m 19s
MacOS Debug	1m 44s
MacOS noexcept Release	1m 55s
MacOS noexcept Debug	1m 48s
WebAssembly Release	4m 20s
WebAssembly Debug	2m 15s
WebAssembly noexcept Release	2m 36s
WebAssembly noexcept Debug	1m 24s
	1h 4m 50s

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