feat: support Jellyfin and rename repo to Themerr - #600

feat: support Jellyfin and rename repo to Themerr#600

ReenigneArcher merged 11 commits into

masterLizardByte/Themerr:masterfrom

refactor/use-abstract-base-classLizardByte/Themerr:refactor/use-abstract-base-classCopy head branch name to clipboard