feat: do primary key check on server side

[taka-oyama]

There is no need to do it on the client side. Server will throw a more precise error anyway.

Before:

LogicException: Cloud Spanner require a primary key!

After:

Google\Cloud\Core\Exception\BadRequestException: {
    "message": "Error parsing Spanner DDL statement: create table `Temp_20240126_054222_000` (`id` string(36) not null)  : Syntax error on line 1, column 67: Expecting 'PRIMARY' but found 'EOF'",
    "code": 3,
    "status": "INVALID_ARGUMENT",
    "details": [
        {
            "@type": "grpc-status-details-bin",
            "data": "<Unknown Binary Data>"
        }
    ]
}