Add Support to Create ARM Template for policyDefinitions

[uday31in]

Describe the solution you'd like

At the moment, due to string escape requirement for policyRule, policyDefinitions Templates are generated as parameter file.

It would be great to have policyDefinitions generated as ARM template. Following JQ Template can help with that

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "metadata": {
        "_generator": {
            "name": "AzOps"
        }
    },
    "parameters": {},
    "variables": {},
    "resources": [
        {
            "type": .Type,
            "name": .name,
            "apiVersion": "2021-06-01",
            "properties": {
                "description": .properties.description,
                "displayName":  .properties.displayName,
                "metadata": {
                    "version": .properties.metadata.version,
                    "category": .properties.metadata.category
                },
                "mode": .properties.mode,
                "parameters": .properties.parameters,
                "policyRule": .properties.policyRule | walk(if type == "string" and (.|startswith("[")) then "[" + sub("^\\["; "[") else . end),
                "policyType": .properties.policyType
            }
        }
    ],
    "outputs": {}
}