chore: upgrade tfhe-rs to v0.10.0 and adopt breaking changes

[moven0831]

The main focus of these changes is to replace the bincode serialization library with tfhe::safe_serialization for secure serialization and deserialization of Fully Homomorphic Encryption (FHE) keys and related data structures.

Serialization and Deserialization Updates:

• Replaced bincode with tfhe::safe_serialization for serialization and deserialization of FHE keys in call.rs, fhe_key.rs, genesis.rs, mock_decryption.rs, and token.rs. This includes updating functions to use safe_serialize and safe_deserialize with a maximum buffer size of 1 GB. [1] [2] [3] [4] [5]

Dependency Updates:

• Updated the tfhe dependency version from 0.7.2 to 0.10.0 in Cargo.toml files to ensure compatibility with the new serialization methods.
• Removed bincode from dependencies in Cargo.toml and various source files where it was previously used. [1] [2] [3] [4]

Code Cleanup:

• Removed unused imports such as borsh and anyhow::Context from token.rs and utils.rs for cleaner and more maintainable code. [1] [2] [3]

These changes improve the security and maintainability of the codebase by adopting safer serialization methods and cleaning up unnecessary dependencies.

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[moven0831]

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