libtracefs: Add meson build targets to Makefile

Add make targets for building with meson:

  make meson
  make meson_install
  make meson_docs

Link: https://lore.kernel.org/linux-trace-devel/20240724134748.52c18018@gandalf.local.home

Cc: Daniel Wagner <wagi@monom.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2 files changed