feat: receiving Image and other types of message in conversation form

[baydisng13]

In conversation form, we can receive a text like

const text = await conversation.form.text();

Can we also receive a photo and other types of message in this format?

[KnorpelSenf]

Thanks for the suggestion! I'll work on this

[KnorpelSenf]

There are a lot of ideas what to wait for. This will not be done for 1.0. We should first figure out #11 and then we can look into adding more things. I would be happy to take ideas regarding #11.

[KnorpelSenf]

There are a few issues with the existing form controls already. For example, form.text reacts to callback queries because updates types are not checked properly. This should be made consistent first, before adding more features.

Do you have time to work on this? Then I have more time to look into #11 as well as #19 and #42.