Recommend using `DateTime.timestamp()` over `DateTime.now().toUtc()`

[Mr-Pepe]

From my understanding, DateTime.timestamp() does the same as DateTime.now().toUtc(). One of my codebases contains a lot of the latter because I did not know that the former existed. In all cases, I actually needed a timestamp and was sometimes worried that I'd forget the toUtc().

A quick GitHub code search yielded 12k results for DateTime.now().toUtc() and in most of those cases DateTime.timestamp() would be the better alternative.

Is this worth a lint rule? Having this rule would make DateTime.timestamp() more discoverable for developers, potentially preventing bugs where devs forget a toUtc() after DateTime.now().