[Tech]: Integrate, configure and customise the Contracts pallet

[bgodlin]

Problem statement

See sora-xor/rfps#65

Description

This issue involves the integration of the contracts pallet into runtime. The integration will enable developers to create, deploy, and execute smart contracts.

Definition of Done

• Contracts Pallet Integrated
• The integrated Contracts Pallet supports basic smart contract functionality, including contract creation, deployment, and execution
• Comprehensive unit tests and integration tests are created and passed to ensure the reliability and security