message: Add cppinclude makefile target
  This is mostly just a reminder that the `cppinclude` tool exists. The
  option will now be present in the tab auto complete list when running
  make.
diff: @@ -100,7 +100,7 @@ install-dependencies:
  .PHONY: lint
  -lint: cppcheck cppclean
  +lint: cppcheck cppclean cppinclude
  .PHONY: cppcheck
  cppcheck:
  @@ -110,6 +110,10 @@ cppcheck:
  cppclean:
  cppclean --quiet --include-path "$(NAS2DINCLUDEDIR)" --include-path "/usr/include/SDL2" --exclude "MicroPather" "$(SRCDIR)"
  +.PHONY: cppinclude
  +cppinclude:
  + cppinclude
  +
  .PHONY: format
  format:
  @clang-format --version
  