Adding support for dedicated host groups and hosts

[thinkdavid]

This PR closes #

The changes in this PR are as follows:

• Adding dedicated hosts and hosts to farmer

I have read the contributing guidelines and have completed the following:

• [x ] Tested my code end-to-end against a live Azure subscription.
• [ x] Updated the documentation in the docs folder for the affected changes.
• [ x] Written unit tests against the modified code that I have made.
• [ x] Updated the release notes with a new entry for this PR.
• [ x] Checked the coding standards outlined in the contributions guide and ensured my code adheres to them.

If I haven't completed any of the tasks above, I include the reasons why here:

Below is a minimal example configuration that includes the new features, which can be used to deploy to Azure:

let deployment =
                    arm {
                        location Location.EastUS

                        add_resources
                            [
                                hostGroup {
                                    name "myhostgroup"
                                    support_automatic_placement true
                                    add_availability_zone "1"
                                    platform_fault_domain_count 2
                                }
                                host {
                                    name "myhost"
                                    parent_host_group (ResourceName "myHostGroup")
                                    sku "Fsv2-Type2"
                                }
                            ]
                    }