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fix: clippy + fmt #721

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10 errors

unused import: `fs`

unused import: `util::paths::get_extensions_dir`

unused import: `DeviceState`

unused imports: `Emitter` and `Listener`

unused import: `functionality::keyboard::js_keycode_to_key`

unused import: `tauri::path::BaseDirectory`

unused import: `crate::util::paths::get_main_extension_path`

unused import: `super::extension::add_extension`

function `add_extension` is never used

static `PTT_ENABLED` is never used