[form] request block type #37
Description
Apply form-encoding to the following request:
POST https://example.com
[form]
operationName: get data
foo: bar
number: 3
The body of the request shall be operationName=get+data&foo=bar&number=3. A Content-Type header should also be automatically inserted, with value of application/x-www-form-urlencoded
Consider that some queries may prefer to drop this header, or replace it (using another value or an empty string)