Modem Cache Manager

I’ve created the following script to help remove messages from the PinePhone’s modem’s cache. This issue was originally discussed in the following thread, with my post being linked here. https://forum.pine64.org/showthread.php?tid=10014&pid=71329#pid71329 https://gitlab.com/redemptionstudio/modem-cache-manager/ Changelog 20211202 Version 0.0.5: Rewrite. Pushed an update to grant functionality for alerting when modem is almost full and for clearing read messages. Needs variable validation and a way to auto-detect the modem device.