build: add initial meson support #119

Job	Run time
linux (g++, g++, 7, -DBUILD_UVW_SHARED_LIB=ON)	46s
linux (g++, g++, 7, -DBUILD_UVW_LIBS=ON)	45s
linux (g++, g++, 7, -DBUILD_UVW_LIBS=OFF)	59s
linux (g++, g++, 8, -DBUILD_UVW_SHARED_LIB=ON)	45s
linux (g++, g++, 8, -DBUILD_UVW_LIBS=ON)	39s
linux (g++, g++, 8, -DBUILD_UVW_LIBS=OFF)	43s
linux (g++, g++, 9, -DBUILD_UVW_SHARED_LIB=ON)	52s
linux (g++, g++, 9, -DBUILD_UVW_LIBS=ON)	52s
linux (g++, g++, 9, -DBUILD_UVW_LIBS=OFF)	51s
linux (clang, clang++, 8, -DBUILD_UVW_SHARED_LIB=ON)	1m 3s
linux (clang, clang++, 8, -DBUILD_UVW_LIBS=ON)	49s
linux (clang, clang++, 8, -DBUILD_UVW_LIBS=OFF)	1m 10s
linux (clang, clang++, 9, -DBUILD_UVW_SHARED_LIB=ON)	46s
linux (clang, clang++, 9, -DBUILD_UVW_LIBS=ON)	46s
linux (clang, clang++, 9, -DBUILD_UVW_LIBS=OFF)	50s
linux (clang, clang++, 10, -DBUILD_UVW_SHARED_LIB=ON)	42s
linux (clang, clang++, 10, -DBUILD_UVW_LIBS=ON)	43s
linux (clang, clang++, 10, -DBUILD_UVW_LIBS=OFF)	44s
linux (clang, clang++, 11, -DBUILD_UVW_SHARED_LIB=ON)	40s
linux (clang, clang++, 11, -DBUILD_UVW_LIBS=ON)	44s
linux (clang, clang++, 11, -DBUILD_UVW_LIBS=OFF)	42s
	16m 51s

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