Update CMakeLists.txt

[sheldonrobinson]

Add cppjieba library definition

[Copilot]

Pull Request Overview

This PR adds the cppjieba library definition to the CMake build system. The change creates an interface library target for cppjieba with appropriate include directories.

• Adds cppjieba as an INTERFACE library target
• Configures include directories for the main project and limonp dependency

[Copilot]

Consider checking if the cppjieba target already exists before creating it to avoid potential conflicts when this CMakeLists.txt is included multiple times. You can use if(NOT TARGET cppjieba) to guard the library creation.

Suggested change

	add_library(cppjieba INTERFACE)
	target_include_directories(cppjieba INTERFACE
	${PROJECT_SOURCE_DIR}/include
	${PROJECT_SOURCE_DIR}/deps/limonp/include
	)
	if(NOT TARGET cppjieba)
	add_library(cppjieba INTERFACE)
	target_include_directories(cppjieba INTERFACE
	${PROJECT_SOURCE_DIR}/include
	${PROJECT_SOURCE_DIR}/deps/limonp/include
	)
	endif()

[yanyiwu]

Thank you