Define build and package paths for Emscripten and update includedirs … #4

Job	Run time
conan-package / Calculate version numbers / Generate version numbers	19s
conan-package / Make the proper runners list	0s
conan-package / Upload specific package recipe / Upload package recipe	29s
conan-package / Upload latest package recipe / Upload package recipe	31s
npm-package / publish-npm	5m 1s
conan-package / Build package	-1s
	6m 19s

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