Develop form component to input unmatched citation title and journal

See parent ticket #4 (closed)

For now (until the shared data model is implemented) we've agreed to make the journal selection "slow"—it will be similar to the pubmed citation search (querying several eutilities and displaying search results, as well as a "Is your journal not listed?" option), rather than an autocomplete select box input.

You want to create an object like this (if the journal is selected):

const metadata = {
  title: 'ARTICLE TITLE',
  journalMeta: {
    nlmuniqueid: 'NLMUNIQUEID',
    title: 'JOURNAL TITLE'
  }
}

or like this (if the journal name is typed):

const metadata = {
  title: 'TITLE',
  customMeta: {
    unmatchedJournal: 'JOURNAL TITLE'
  }
}

This object will be sent back to the Dashboard and used to create a new submission.