RPM Shim for Virtualenvs

The `rpm-shim` library (available on PyPI as `rpm`) provides a shim module to enable the use of system RPM Python bindings within Python virtual environments. This is necessary because native RPM Python bindings are typically tied to the system's RPM installation and are not distributed as standard Python packages. The library is currently at version 0.4.0 and releases are made on an as-needed basis to improve compatibility and search heuristics.