packaging: "install" target?

[dtzWill]

Maybe it would only 'install' the tool mentioned in #3, but it would be helpful to allow folks to use LLPE without persisting the entire build tree :).

Depending on what makes sense to be "installed" from the project, a few CMakeLists tweaks might be all that's needed.

Just thought I'd mention it 👍 .

[smowton]

Sounds good, I'm not likely to get to devote time to LLPE in the very near future but patches gladly accepted :)