graphql types
<!---- Default GraphQL Scalar values ----------------------------------->
GraphQL comes with a set of default scalar types out of the box:
Int: A signed 32‐bit integer.
Float: A signed double-precision floating-point value.
String: A UTF‐8 character sequence.
Boolean: true or false.
ID: The ID scalar type represents a unique identifier.
NOTE: In most GraphQL service implementations, there is also a way
to specify custom scalar types.
<!----------------------------------- Default GraphQL Scalar values ---->