Required parameters for TensorMap

[ndiamant]

What
Make shape required for TensorMap and check the other parameters if they should be required.

Why
You should get an error making a TensorMap without a shape, because it can't be used in a model. Fail early!

How
Remove the default of None for shape. See if the recipes still run using the smoke tests if other defaults are removed.

Acceptance Criteria
Less Optional parameters.

[lucidtronix]

Many TensorMaps make use of the shape inference from the channel_map in the TensorMap constructor. I agree we should fail early if that inference fails, but I don't think we need to make shape required.

[lucidtronix]

Also, I'd vote for removing the Optional type hint altogether. If params have default values they are optional.