Add bold support for CJK characters #159

Job	Run time
pre-job	4m 2s
windows-build-and-test (opengl, legacy)	6h 0m 30s
windows-build-and-test (opengl, drawable)	6h 0m 31s
windows-build-and-test (egl, legacy)	6h 0m 32s
windows-build-and-test (vulkan, drawable)	6h 0m 31s
windows-build-and-test (osmesa, legacy)	6h 0m 32s
windows-build-and-test (osmesa, drawable)	6h 0m 32s
Windows CI Result	3s
	1d 12h 7m 13s

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