Add cuisine= bubble_tea in taginfo.json

[hanchao]

Bubble tea (also known as pearl milk tea, bubble milk tea, or boba) (Chinese: 珍珠奶茶; pinyin: zhēnzhū nǎichá, 波霸奶茶; bōbà nǎichá) is a Taiwanese tea-based drink. It is popular in most parts of East and Southeast Asia. Tag it with amenity=cafe and cuisine= bubble_tea.

https://wiki.openstreetmap.org/wiki/Tag:cuisine=bubble%20tea
https://en.wikipedia.org/wiki/Bubble_tea