feat: add support for fieldsets
{"name":"enhancement","color":"a2eeef"}
#1 — add support for fieldsets cluster
#2 — fix typescript validator undefined cluster
fix: Typescript type of validator
{"name":"bug","color":"d73a4a"}
#3 — fix circular reference custom types cluster
fix: possible circular reference when using custom types
{"name":"bug","color":"d73a4a"}
#4 — undefined prop types query cluster
#5 — bug custom image fields undefined cluster
bug: fields of `image` can be custom type
{"name":"bug","color":"d73a4a"}