new create "Streets" group in add entity panel

[kfarr]

Not be a Pro layer, open to all users

Cards:

• card1 - add streetmix.net
• card2 - add streetplan.net

Street preset cards:

• card3 45' ROW, 30' Roadway https://nacto.org/publication/urban-street-design-guide/streets/yield-street/
• card4 + card5 80' ROW / 50' Roadway https://nacto.org/publication/urban-street-design-guide/streets/downtown-2-way-street/ OLD 2 lane each way + parking, NEW road diet
• card6 + 7 94' ROW / 64-foot roadway: https://nacto.org/publication/urban-street-design-guide/streets/neighborhood-main-street/
• card8 150' ROW / 120-foot roadway https://nacto.org/publication/urban-street-design-guide/streets/transit-corridor/

[kfarr]

appears to work, but a few more things before merging and deploying:

• - test some more, both groups
• - see if easy to remove buildings as default
• - fix road emoji character
• - double check sanity of default selected group as well as ordering and contents of all groups
• - add preview images
• - add back pro to these street layers? No
• - Remove "add street" from the Pro group
• - Use "Dividers" category as default