Move additional recommended tsconfig to base tsconfig

[defunctzombie]

We repeat this in every extension example. We should move this to the base extension config. The user can override to disable if they want. We should aim to reduce the amount of boilerplate copied to every extension.

https://github.com/foxglove/create-foxglove-extension/blob/main/examples/extension-demo/tsconfig.json#L11-L20