Installation of tagfiles for lite

[anutosh491]

Currently while building xeus-cpp-lite I see

-- Install configuration: "Release"
-- Up-to-date: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/xeus-cpp/tagfiles
-- Up-to-date: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/xeus-cpp/tagfiles/cppreference-doxygen-web.tag
-- Up-to-date: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/etc/xeus-cpp/tags.d
-- Up-to-date: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/etc/xeus-cpp/tags.d/stl.json
-- Up-to-date: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/jupyter/kernels
-- Up-to-date: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/jupyter/kernels/xcpp20
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/jupyter/kernels/xcpp20/kernel.json
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/jupyter/kernels/xcpp20/logo-64x64.png
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/jupyter/kernels/xcpp20/logo-32x32.png
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/share/jupyter/kernels/xcpp20/logo-svg.svg
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/lib/cmake/xeus-cpp/xeus-cppConfig.cmake
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/lib/cmake/xeus-cpp/xeus-cppConfigVersion.cmake
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/bin/xcpp.js
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/bin/xcpp.wasm
-- Installing: /Users/anutosh491/micromamba/envs/xeus-cpp-wasm-host/bin/xcpp.data

If you see, the .tag and the .d files also end up in the prefix just like the native case.

But the point is that jupyterlite-xeus only takes care of the kernels dir, the xx.cmake files and the xx.js, xx.wasm, xx.data files. It won't be handling the tagfiles.

Rather for the inspect request to work, these files are taken care of here.

xeus-cpp/CMakeLists.txt

Lines 449 to 450 in b6a7267

	PUBLIC "SHELL: --preload-file ${XEUS_CPP_DATA_DIR}@/share/xeus-cpp"
	PUBLIC "SHELL: --preload-file ${XEUS_CPP_CONF_DIR}@/etc/xeus-cpp"

Hence technically these files being installed are redundant for the lite case. No need to install them while building xeus-cpp-lite.