Accommodate comma-separated config values

There's no way to provide comma-separated config values through the configuration argument.

For example, I want to specify a list of services via the SERVICES config variable (e.g., SERVICES=s3,ec2,secretsmanager,ecs,iam,sts,fis). However, the configuration parsing code naively splits the provided string on commas:
https://github.com/localstack/localstack-dagger-module/blob/6e2683e20e54e7ceab130ebe2abed050b6670ed2/src/localstack/main.py#L47-L52

As such, when specifying configuration as follows, ec2 is recognized as a separate config variable rather than another service in the list of services that comprise the value for the SERVICES config variable:

dag.Localstack().Start(dag.LocalstackStartOpts{
  Configuration: "SERVICES=s3,ec2,secretsmanager,ecs,iam,sts,fis"
})

There are a few solutions to this:

1. use a non-comma delimiter to distinguish configuration key-value pairs (e.g., use ; as the delimiter: "SERVICES=s3,ec2,secretsmanager;AWS_DEFAULT_REGION=east-us-1")
2. accommodate escaped quotes (e.g., "SERVICES=\"s3,ec2,secretsmanager\",AWS_DEFAULT_REGION=east-us-1")

先閱讀 src/localstack/main.py 第 47-52 行的設定解析程式碼，並追蹤設定引數如何被分割。比較提議的分隔符號與跳脫處理方式，然後檢查儲存庫中現有的測試或測試指令。當以逗號分隔的值仍是單一設定值的一部分，且個別的設定項目仍能正確解析時，即表示完成。