Rename type to spaceType in space lexicons

I would like to propose to rename type at these locations

https://github.com/bluesky-social/atproto/blob/7cefaccc5307db53d92cda364ff582a2efec0027/lexicons/com/atproto/space/listSpaces.json#L11

https://github.com/bluesky-social/atproto/blob/7cefaccc5307db53d92cda364ff582a2efec0027/lexicons/com/atproto/simplespace/createSpace.json#L14

to spaceType

Right now they produce the following error in indigo lexgen

failed to process schema "lexicons/com/atproto/space/listSpaces.json": failed to format output of "api/atproto/spacelistSpaces.go" with goimports: api/atproto/spacelistSpaces.go:33:104: expected ')', found 'type'

and I can imagine other code generators will also have problems with it.

It also aligns better with the wording used in proposal 0016