feat: Add filter to JSON data sources

[jgrexa]

Fixes https://github.com/smutel/terraform-provider-netbox/issues/176

Add possibility to filter JSON datasources.

For example:

data "netbox_json_ipam_prefixes_list" "test" {
  limit = 0
  filter {
    name = "foo"
    value = "bar"
  }
  filter {
    name = "foo_n"
    value = "barbar" 
}

[smutel]

Could you please fixup your commits with the message "feat: Add filter to JSON data sources".
Could you please also create an issue linked to this PR.

Thanks.

[jgrexa]

Title updated & issue created.