Updated our analytics on creation of Blocks/Interface

[abidlabs]

Three quick changes to our analytics on creation of Blocks/Interface:

• We actually fire the analytics when Blocks are created (previously, it was only when Interface was created)
• We record whether it was a Blocks or Interface that was created (using "mode")
• We also record which Gradio version they are running

I've also updated the gradio-api-server running to accept these analytics. We should keep in mind that we'll see an artificial bump in the "initiation" analytics as a result of this. For retrospective analysis, we should stick to launch analytics, which correctly record whenever Blocks are launched

[github-actions]

All the demos for this PR have been deployed at https://huggingface.co/spaces/gradio-pr-deploys/pr-2082-all-demos

[dawoodkhan82]

@abidlabs the tests with analytics_enabled are mocked right?

[freddyaboulton]

Looks good to me @abidlabs ! I think we're mocking the requests so we should be good to go.

That being said, I don't think we're setting analytics_enabled to False in the all_demos demo that's being deployed to spaces so we should do that! I can do that too, up to you!

[abidlabs]

Thanks for the review, guys! Will update all_demos, fix the tests, and then merge in.

[ghost]

Hey! @abidlabs, if i enable analytics where do I go to see the analytics for my space (if that's even possible?)