build!: replace configure.py with meson documentation

[c-dilks]

Resolve #77, however, we don't want to encourage using an INI file for more than it's designed for. Thus, we limit the INI file guidance to handling dependency resolution only, and defer all other build option setting guidance to the documentation.

The idea here is that users should use meson commands as they are designed (e.g., don't rm -rf build directories). This will make building Iguana completely transparent for the general user (we don't want to maintain a meson wrapper); it also teaches users how to build a meson project.