Use co-located components instead of pods

[NullVoxPopuli]

Marking as breaking because gjs/gts users will need to update their imports from:

import VerticalCollection 
  from 
    '@html-next/vertical-collection/components/vertical-collection/component'

to

import VerticalCollection 
  from 
    '@html-next/vertical-collection/components/vertical-collection'

tho, when wo do this release we'll do:

import { VerticalCollection } from '@html-next/vertical-collection';

which is not in this PR