Added Staking architecture image (#1392)

* added image to staking architecture

* changed image

Author: LandauRaz

components/Starknet/modules/staking/images/staking-architecture.png

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 Staking on Starknet is designed to enhance network security and decentralization by allowing users to stake their STRK tokens directly or delegate them to other validators. The architecture is modular, with different contracts handling specific responsibilities to ensure flexibility, security, and ease of upgrades. For more details on the staking architecture, visit the following link: https://github.com/starkware-libs/starknet-staking[Starknet Staking Repository].
 
+image::staking-architecture.png[]
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 == Components of the Staking Architecture
 
 Staking is divided into several key components, each responsible for different aspects of the staking process.