Include cosponsor information

[maxachis]

Enhancement

What needs done

Add bill information on cosponsors.

Implementation-wise, this will pose a slight challenge on the front- and back-end, as the number of cosponsors to a bill can be variable, and hence how do organize, query, and display the data to account for this will need to be considered holistically.

Why it needs done

Cosponsor information relevant to each bill, and should be included. Additionally, cosponsor information is included in the summaries, using up critical space on repetitive information which can be gleaned without resorting to comparatively expensive API calls.