Add Market Note transport to frontend

[karashiiro]

Particularly for Japanese data centers, this will make the site more broadly useful. Market Note provides very different data from the data we currently have on the market pages, so a new component is needed to house this information.

If anyone gets to this before me, make sure to link back to the EMN page the data comes from. The author of EMN fairly requests that others credit the data where used.

[karashiiro]

Their data doesn't match our format, so it's impossible to insert listings from them. However, their statistics can improve ours, see 7fd2baa