Print the version on startup

[mariocynicys]

Would be helpful to print the tower version on startup (and possibly the commit sha as well).
This helps in knowing what version produced which logs (which I append into .teos/teosd.log).

[sr-gi]

Current version should be rather easy, commit hash will be trickier

[mariocynicys]

Current version should be rather easy, commit hash will be trickier

I find this one particularly useful in development when I forget which commit/branch I am running on.

[sr-gi]

Current version should be rather easy, commit hash will be trickier

I find this one particularly useful in development when I forget which commit/branch I am running on.

This may be useful https://docs.rs/built/latest/built/

[AnmolSirola]

@sr-gi @mariocynicys Hey guys, I think i would work on this as my first contribution :)