Don't install crate tracking files (#51)

I'm not aware of any build processes in colcon which modify or append to
files in the install tree. Since we aren't using these files anyway, we
should avoid installing them.

colcon_cargo/task/cargo/build.py

@@ -136,6 +136,7 @@ def _install_cmd(self, cargo_args):
             '--path', '.',
             '--root', args.install_base,
             '--target-dir', args.build_base,
+            '--no-track',
         ]
         if not any(
             arg == '--profile' or arg.startswith('--profile=')