feat(utils): add health check utilities for cloud providers

[shivv23]

Summary

Add health check utilities for monitoring provider availability.

Why

Production apps need to check if cloud providers are reachable.

What

• HealthChecker - aggregate multiple checks
• HealthStatus - structured response with latency
• check_tcp_port() - TCP connectivity check
• check_http_endpoint() - HTTP health check

Usage

let checker = HealthChecker::new()
    .add_check("AWS", || async {
        check_http_endpoint("https://aws.amazon.com", Duration::from_secs(5)).await
    });

let healthy = checker.is_healthy().await;

Files

• rustcloud/src/utils/health/mod.rs

[Sandipmandal25]

The file added in this PR is not declared as a module anywhere in the crate so it is never compiled it is dead code and has no effect on the library. Please run cargo build locally and confirm it compiles before marking this ready for review.

[Sandipmandal25]

The file added in this PR is not declared as a module anywhere in the crate so it is never compiled it is dead code and has no effect on the library. There are also no CI checks running on this branch so compilation errors would not be caught automatically but you should verify this before opening one more new pr reporting this again . Beyond the wiring issue there is at least one code level bug in this PR that would prevent compilation. Please run cargo build locally and confirm it compiles before marking this ready for review.