Migrate to Mantine v8 and Design Changes (#961)

* mantine v8 migration

* various design changes and improvements

src/shared/components/multi-select/multi-select.tsx

@@ -0,0 +1,36 @@
+import {
+    MultiSelect as MantineMultiSelect,
+    MultiSelectProps as MantineMultiSelectProps,
+} from '@mantine/core';
+import { CSSProperties } from 'react';
+
+import styles from './multi-select.module.css';
+
+export interface MultiSelectProps extends MantineMultiSelectProps {
+    maxWidth?: CSSProperties['maxWidth'];
+    width?: CSSProperties['width'];
+}
+
+export const MultiSelect = ({
+    classNames,
+    maxWidth,
+    variant = 'default',
+    width,
+    ...props
+}: MultiSelectProps) => {
+    return (
+        <MantineMultiSelect
+            classNames={{
+                dropdown: styles.dropdown,
+                input: styles.input,
+                option: styles.option,
+                root: styles.root,
+                ...classNames,
+            }}
+            style={{ maxWidth, width }}
+            variant={variant}
+            withCheckIcon={false}
+            {...props}
+        />
+    );
+};