feat: Formating Module

[42atomys]

Describe the pull request
Add possibility to format the received data as the user want in each storage or in all storage

Checklist

• I have linked the relative issue to this pull request
• I have made the modifications or added tests related to my PR
• I have added/updated the documentation for my RP
• I put my PR in Ready for Review only when all the checklist is checked

Breaking changes ?
no

Additional context
By default the formating is {{ .Payload }} but can be customized with golang template.

One example
template file or string

{
  "config": "{{ toJson .Config }}",
  "storage": {{ toJson .Storage }},
  "metadata": {
    "model": "{{ .Request.Header | getHeader "X-Model" }}",
    "event": "{{ .Request.Header | getHeader "X-Event" }}",
    "deliveryID": "{{ .Request.Header | getHeader "X-Delivery" | default "unknown" }}"
  },
  "payload": {{ .Payload }}
}

data sended to the storage

{
  "config": {
    "apiVersion":"v1alpha1",
    "observability":{
      "metricsEnabled":true
    },
    "specs":[
      {
        "name":"exampleHook",
        "entrypointUrl":"/webhooks/duoapi"
      }
    ]
  },
  "storage": {
    "type":"rabbitmq"
  },
  "metadata": {
    "model": "user",
    "event": "create",
    "deliveryID": "68c302c8-54c7-4fff-91ef-d3dd85d84ceb"
  },
  "payload": {
    "id": 8509185,
    "login": "atomys",
    "github": "https://github.com/42Atomys"
  }
}

[codecov-commenter]

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