feat(js/ai): Adds GenerateOptions#resume, ToolAction#reply, Message#interrupts

[mbleigh]

const myInterrupt = ai.defineInterrupt(...);
const response = await ai.generate({tools: [myInterrupt], prompt: "Call myInterrupt"});

const resumedResponse = await ai.generate({
  messages: response.messages,
  resume: {reply: myInterrupt.reply(response.interrupts[0], "the interrupt response");
});

Checklist (if applicable):

• PR title is following https://www.conventionalcommits.org/en/v1.0.0/
• Tested (manually, unit tested, etc.)
• Docs bug filed: [Docs] Document Interrupts #1657

[pavelgj]

I like this very much!