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/app/providers/AppProviders.tsx

@@ -0,0 +1,8 @@
+import { type PropsWithChildren } from "react";
+import { QueryProvider } from "./QueryProvider";
+
+const AppProviders = ({ children }: PropsWithChildren) => {
+  return <QueryProvider>{children}</QueryProvider>;
+};
+
+export default AppProviders;