Any AI bots/sites out there with natural language capable of backtesting, say, an ITM 0DTE covered call on e-minis?
Sure, AI is basically "the magic ring" or "genie in the bottle", "golden fish" etc. You don't have to know anything anymore, learn, work, no, because it's magic. You can be a drooling imbecile, all you need is rub the bottle and say "AI, make me some money" and they will effortlessly, magically appear.
There seem to be companies that are exploring that: https://capitalise.ai/ But you still will need to create a trigger for any action, like "buy at the opening using 5% of the funds". So you would be just talking to another developer to write down your strategy. You could get that from a freelancer and would be specific to your broker and needs
Learning some basic syntax of a scripting language is not that hard and avoids potential mistakes introduced by any "AI" translation.
Some popular trading platforms and software that offer backtesting capabilities include TradeStation, Thinkorswim, NinjaTrader and etc. Google it)
It is possible to create backtest framework for it using brainfuck, doesn't mean it's a good idea to do so. https://en.wikipedia.org/wiki/Brainfuck