Move "core" folder out of "features" into "base"

src/base/components/CustomTooltip.tsx

@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+import Tooltip, { TooltipProps } from '@mui/material/Tooltip';
+
+export const CustomTooltip = ({
+    children,
+    disabled = false,
+    title,
+    ...props
+}: TooltipProps & { disabled?: boolean }) => (
+    <Tooltip {...props} title={disabled ? '' : title}>
+        {children}
+    </Tooltip>
+);