Support running in browsers

[HunderlineK]

Is your feature request related to a problem? Please describe.

• I'd like to be able to use the flows in the browser

Describe the solution you'd like

• Genkit can be imported and used in the browser context

Describe alternatives you've considered N/A

Additional context N/A

[joerick]

I'd like to add a +1 to this. Of course, it would be a very bad idea to do this in production settings (so it should come with some warnings), but it really simplifies quick prototype development. This is crucial in AI, given how much the applications are unexplored.

FWIW, @google/genai supports running in-browser.