feat: add cgroups field for cpu and memory

[gaius-qi]

Description

This pull request adds support for Cgroup statistics to both CPU and Memory data structures across the protobuf definitions, Rust code, and validation logic. These changes enable the system to report and validate Cgroup-specific resource usage, such as CPU shares, quotas, and memory limits, which are critical for containerized environments.

Cgroup Statistics Support

• Added new CgroupCPU and CgroupMemory messages to the protobuf definitions (pkg/apis/common/v2/common.proto, proto/common.proto), and included them as optional fields in the CPU and Memory messages. These hold Cgroup-specific stats like shares, period, quota for CPU, and limit, usage, max usage, failcnt for memory. [1] [2] [3] [4]
• Updated the Rust data structures in src/common.v2.rs to include new cgroup fields in the Cpu and Memory structs, along with their respective struct definitions for CgroupCpu and CgroupMemory. [1] [2]

Validation Logic Enhancements

• Implemented validation methods for the new CgroupCPU and CgroupMemory types in pkg/apis/common/v2/common.pb.validate.go, including Validate, ValidateAll, and error types for reporting validation failures. [1] [2]
• Updated the validation logic for CPU and Memory messages to invoke validation on their respective cgroup fields when present, ensuring embedded message validation is performed correctly. [1] [2]

Miscellaneous

• Bumped the crate version in Cargo.toml from 2.2.14 to 2.2.15 to reflect the new feature addition.

Related Issue

Motivation and Context

[chlins]

lgtm