Dedicated payload builder #41
Description
There is currently a simple payload builder in each constructor's page which allows the user to fill out primitive fields to create a payload usable in webogram (or anything similar). But it does not let users fill out additional embedded TL objects, so it is cumbersome to send complex payloads with this tool.
This issue is complete when a dedicated, full-featured payload builder is finished. It should allow users to build any payload that is also programmatically possible.