Add implementation for starknet_getBlockWithReceipts

[ptisserand]

starknet_getBlockWithReceipts implementation is missing in starknet_provider

Tasks:

• Add getBlockWithReceipts in ReadProvider interface and in JSONRPCProvider implementation.
• Add corresponding models in starknet_provider/lib/src/model
• Add corresponding tests using devnet.
• Update JSON RPC supported methods tables in starknet_provider/README.md and docs/packages/starknet-provider.mdx

[jaiminRaiyani]

Hi! I'd love to work on this issue. I have experience with Starknet and provider implementations. I’ll add getBlockWithReceipts to ReadProvider, implement it in JSONRPCProvider, create the necessary models, write tests using devnet, and update the docs.

[ptisserand]

Hi! I'd love to work on this issue. I have experience with Starknet and provider implementations. I’ll add getBlockWithReceipts to ReadProvider, implement it in JSONRPCProvider, create the necessary models, write tests using devnet, and update the docs.

Assigned, thanks for your help!