feat: Add Skeleton Loaders for Better Loading Experience

[durdana3105]

Description:

Replace generic loading indicators with skeleton loaders while movie and studio data are being fetched.

Features
Movie card skeleton
Dashboard skeleton
Responsive design
Remove skeleton once data loads
Benefits
Better perceived performance.
Modern UI.

Please assign this issue to me under eSOC.

[durdana3105]

please assign this issue to me under esoc

[ayeshafaeza-2427]

Hi @durdana3105 Assign to me under ECSoC

[SRV30]

please assign this issue to me under esoc

@durdana3105 any progress