chore: add Extendium plugin and update my other readmes to point to Extendium - #75

chore: add Extendium plugin and update my other readmes to point to Extendium#75

BossSloth merged 2 commits into

mainSteamClientHomebrew/PluginDatabase:mainfrom

extendiumSteamClientHomebrew/PluginDatabase:extendiumCopy head branch name to clipboard