Support Azure MySQL as a deployment option for mysql in Aspire.Hosting.Azure

https://learn.microsoft.com/en-us/azure/mysql/quickstart-create-mysql-server-database-using-bicep

## AsAzureMySql

AsAzureMySql will treat this resource like an Azure resource when run locally and in when published to the manifest. 

```C#
var builder = DistributedApplication.CreateBuilder();
var db = builder.AddMySql("mysql")
.AsAzureMySql()
.AddDatabase("db");
```

## PublishAsAzureMySql

PublishAsAzureMySql will only affect the manifest but will run as a container image locally.

```C#
var builder = DistributedApplication.CreateBuilder();
var db = builder.AddMySql("mysql")
.PublishAsAzureMySql()
.AddDatabase("db");
```