Refactor core functions to return error instead of bool

[fromsaurav]

Summary

Refactored core initialization functions to return error instead of bool for improved error handling and debugging capabilities.

Changes Made

Functions Refactored

• InitK8sClient() - k8sHandler.go:103
• InitLocalAPIClient() - k8sHandler.go:126
• InitInclusterAPIClient() - k8sHandler.go:152
• InitLogger() - kubeArmor.go:231
• InitSystemMonitor() - kubeArmor.go:261

Validation

Before

func InitK8sClient() bool {
    if !InitLocalAPIClient() {
        kg.Print("Failed to initialize local API client")
        return false
    }
    return true
}

After

func InitK8sClient() error {
    if err := InitLocalAPIClient(); err != nil {
        return fmt.Errorf("failed to initialize local API client: %w", err)
    }
    return nil
}

Testing

• ✅ Code compiles successfully
• ✅ Passes go vet analysis
• ✅ No functional regressions
• ✅ Enhanced error reporting verified

Fixes #2153

[Aryan-sharma11]

@fromsaurav Thanks for handling this.

[fromsaurav]

@Aryan-sharma11 Thanks for reviewing! Could you please help with the failing check ? doesn't seem related to this pr.

[GAURAV-DEEP01]

Changes look good from my side