Codebase Improvements

• Replace speedtest Mac dependency for speedtest-cli
• Lint the codebase on both MacOS Big Sur & Debian 11
• Add option for reloading the menu after each test

Existing users - note for updating:

• Delete ~/.nettest directory (will rebuild caches / do a first-run check)
  • OR
• Add the following line to your existing ~/.nettest/config.conf:

RELOAD_MENU=0

• Reload menu details

Bugfixes

• Cache enterprise AP lookups to fix Mac-specific bug
• Fix column alignment splinter on test #6 when SSIDs with spaces in the name are nearby

Fix Ping on Macs

Fix ping protocol for Macs