[Add source] Long Beach, California

[peterbecich]

Note: we only want databases that are:

• the product of on-the-ground tree surveying (not aerial imagery),
• open data
• not duplicating another source of data already included

• Name of town/city/whatever: Long Beach, California
• Page with information about the dataset: https://data.longbeach.gov/explore/dataset/tree-inventory/information/
• URL that directly downloads the dataset: (documentation) https://data.longbeach.gov/explore/dataset/tree-inventory/api/
• Dataset format (should be CSV, GeoJSON or zipped Shapefile): Does not appear to be GeoJSON
• Country: United States
• Important fields (if not in English/French - especially height, diameter, crown width):