feat: add EC2Monitoring for network ingress/egress

[xendo]

Adding network egress and ingress monitoring to the EC2Monitoring.

This partially addresses: #515

I tested this by deploying to my infrastructure and eyeballing the dashboard and alarms from the console

monitoring.monitorEC2Instances({
        ...
        autoScalingGroup: autoscalingGroup,
        addNetworkOutTotalBytesExceedThresholdAlarm: {
          WARNING: {
            maxNetworkOutBytes: 1_000_000_000,
          },
        },
      });

Fixes #

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[xendo]

still need one more revision, I messed up one more thing