Misalignment in between the Terraform fleet_integration_policy parameters and the full scope of options supported by the Fleet API

[alextg314]

Is your feature request related to a problem? Please describe.
Unable to define the Defend integration using Terraform

Describe the resource you would like to have implemented.
See POST /package_policies (Fleet API)

    data = {
        "policy_id": agent_policy_id,
        "package": {
            "name": "endpoint",
            "version": "x"
        },
        "name": ei_endpoint",
        "description": "",
        "namespace": "z",
        "inputs":[
            {
                "enabled":"true",
                "streams":[],
                "type":"ENDPOINT_INTEGRATION_CONFIG",
                "config":{
                    "_config":{
                        "value":{
                            "type":"endpoint",
                            "endpointConfig":{
                                "preset":"EDRComplete"
                            }
                        }
                    }
                }
            }
        ]
    }

Describe the solution you'd like
Would like to define the above API into Terraform, it should be something like below, but elastic team needs to enhance the Terraform resource to allow for parameters like config and type to be specified

Describe alternatives you've considered
The following TF has been run unsuccessfully due to the above limitations

resource "elasticstack_fleet_integration_policy" "fleet_defend_integration_policy" {
  name                = endpoint_integrations"
  namespace           = "my_namespace"
  description         = "my_description"
  agent_policy_id     = elasticstack_fleet_agent_policy.default_agent_policy.policy_id
  integration_name    = elasticstack_fleet_integration.endpoint_integration.name
  integration_version = elasticstack_fleet_integration.endpoint_integration.version

  input {
    input_id = "endpoint"
    vars_json = jsonencode(
      {
          "config.integration_config.value": {
            "type": "endpoint", 
            "endpointConfig.preset": "EDRComplete"
          }
      }
    )

  }
}

Additional context
Issue was discussed here