Add video feed feature with related components and hooks

- Implemented VideoFeed component to display sightings.
- Created useSightingList and useVideoFeed hooks for data fetching and state management.
- Added AppProviders for context management.
- Updated Dashboard to include VideoFeed.
- Introduced types for sightings in utils/types.tsx.
- Added Header and Footer components for layout.
- Configured React Query for data handling.

src/features/dashboard/hooks/useSightingList.ts

@@ -0,0 +1,26 @@
+import { useEffect, useRef, useState } from "react";
+import { useVideoFeed } from "./useVideoFeed";
+import type { SightingType } from "../../../utils/types";
+
+export const useSightingList = () => {
+  const [sightingList, setSightingList] = useState<SightingType[]>([]);
+  const { videoFeedQuery } = useVideoFeed();
+  const latestSighting = videoFeedQuery?.data;
+  const lastProcessedRef = useRef<number>(-1);
+
+  useEffect(() => {
+    if (!latestSighting || latestSighting.ref === undefined || latestSighting.ref === -1) return;
+
+    if (latestSighting.ref !== lastProcessedRef.current) {
+      lastProcessedRef.current = latestSighting.ref;
+
+      // eslint-disable-next-line react-hooks/set-state-in-effect
+      setSightingList((prevList) => {
+        if (prevList[0]?.ref === latestSighting.ref) return prevList;
+        const dedupPrev = prevList.filter((s) => s.ref !== latestSighting.ref);
+        return [latestSighting, ...dedupPrev].slice(0, 10);
+      });
+    }
+  }, [latestSighting, latestSighting?.ref]);
+  return { sightingList };
+};