added interactive parameter to components

[abidlabs]

All Component classes now have an interactive parameter, which can be True, False, or (by default), None.

In the Interface class, input components have interactive set to None, but output components set to False

Closes #925

[pngwn]

@abidlabs I have implemented the frontend for this kindof. There are some bugs/ inconsistencies with the static version of components but the mechanism is implemented and can be tested. We can create new issues for any bugs we find.

[pngwn]

Hmm test failing, I'll have to take a look at that a little later.

[pngwn]

@abidlabs Should be good now. Made some additional tweaks to ensure everything is rendering as expected, even when empty.

We'll need to cleanup the components at some point, the line between what stays in the app and what goes into the separate component is a little blurry atm, but we can sort that out later.

[abidlabs]

LGTM everything seems to be working, and the output components for the media types (audio, image, time series, etc.) look very nice!

Feel free to merge whenever you are ready.