cmake: install vim data

Co-authored-by: Alexander Epaneshnikov <[email protected]>

CMakeLists.txt

@@ -29,3 +29,7 @@ message(STATUS "  libpcaudio: ${USE_LIBPCAUDIO} (${PCAUDIO_LIB} ${PCAUDIO_INC})"
 message(STATUS "  klatt: ${USE_KLATT}")
 message(STATUS "  speech-player: ${USE_SPEECHPLAYER}")
 message(STATUS "  async: ${USE_ASYNC}")
+
+install(
+  DIRECTORY vim/ftdetect vim/syntax DESTINATION share/vim/vimfiles
+)