[Feature]: Send-AzWvdUserSessionMessage to utilise Id property from Get-AzWvdUserSession

### Description of the new feature

Currently, use of Send-AzWvdUserSessionMessage is a touch cumbersome. In order to run it, you need to first get (at least) a session id from `Get-AzWvdUserSession -ResourceGroupName RGNAME -HostPoolName HOSTPOOLNAME`. Example returned object:

```
ActiveDirectoryUserName : DOMAIN\user
ApplicationType : Desktop
CreateTime : 12/05/2022 11:18:58
Id : /subscriptions/GUID/resourcegroups/RGNAME/providers/Microsoft.DesktopVirtualization/hostpools/HOSTPOOLNAME/sessionhosts/SESSIONHOSTNAME.domain.com/usersessions/6
Name : HOSTPOOLNAME/SESSIONHOSTNAME.domain.com/6
ObjectId : 00000000-0000-0000-0000-000000000000
SessionState : Active
Type : Microsoft.DesktopVirtualization/hostpools/sessionhosts/usersessions
UserPrincipalName : user@domain.com
```

Based on this output (noting the absense of properties for `UserSessionId` or `SessionHostName`), an example of what must be then provided to send a message to a single user:

`Send-AzWvdUserSessionMessage -ResourceGroupName RGNAME -HostPoolName HOSTPOOLNAME -SessionHostName SESSIONHOSTNAME.domain.com -UserSessionId 6 -MessageTitle 'This is a message from PowerShell' -messagebody 'Hello!'`

This requires parsing properties from the output of `Get-AzWvdUserSession` for the UserSessionId and SessionHostName.

### Proposed implementation details (optional)

The `Id` property on the object returned from `Get-AzWvdUserSession` contains enough data to pipe to `Send-AzWvdUserSessionMessage`; it contains the resource group name, the host pool name, the session host name and the id of the session.

To send a message to all users:

`Get-AzWvdUserSession -ResourceGroupName RGNAME -HostPoolName HOSTPOOLNAME | Send-AzWvdUserSessionMessage -MessageTitle 'This is a message from PowerShell' -messagebody 'Hello!'`

Failing pipeline support, an additional property could be added to the `Send` cmdlet, that accepts the `Id` value from the `Get` cmdlet.

`Get-AzWvdUserSession -ResourceGroupName RGNAME -HostPoolName HOSTPOOLNAME | Foreach-Object { Send-AzWvdUserSessionMessage -NewPropertyName $_.Id -MessageTitle 'This is a message from PowerShell' -messagebody 'Hello!' }`