message: shell: add install rule for CLI binary
  This adds an install rule for the CLI binary, so that it's automatically included in distro packages.
diff: @@ -19,3 +19,6 @@ endif()
  set_target_properties(shell PROPERTIES OUTPUT_NAME duckdb)
  set_target_properties(shell PROPERTIES RUNTIME_OUTPUT_DIRECTORY
  ${CMAKE_BINARY_DIR})
  +
  +install(TARGETS shell
  + RUNTIME DESTINATION "${INSTALL_BIN_DIR}")
  