replace react-intersection-observer package with mantine hooks

src/shared/hooks/use-in-viewport.ts

@@ -0,0 +1,3 @@
+import { useInViewport as useMantineInViewport } from '@mantine/hooks';
+
+export const useInViewport = useMantineInViewport;

src/shared/hooks/use-intersection.ts

@@ -0,0 +1,3 @@
+import { useIntersection as useMantineIntersection } from '@mantine/hooks';
+
+export const useIntersection = useMantineIntersection;