feat: S3 metric storage

[subhankarb]

Tell us about the problem you're trying to solve

S3 metric storage.

Describe the solution you’d like

We will add one implementation of MetricRepository. The name will be S3MetricRepository

The S3 storage configuration will look like below.

storage:
  type: s3
  params:
    path: /dcs_metrics
    bucket: dcs-metrics
    region: us-east-1
    aws_access_key_id: !ENV ${AWS_ACCESS_KEY_ID}
    aws_secret_access_key: !ENV ${AWS_SECRET_ACCESS_KEY}