instead of showing addresses in info message, provide an API to get the
contact-id.
UI can then make the info message tappable and open the contact profile
in scope
the corresponding iOS PR - incl. **screencast** - is at
https://github.com/deltachat/deltachat-ios/pull/2652 ; jsonrpc can come
in a subsequent PR when things are settled on android/ios
the number of parameters in `add_info_msg_with_cmd` gets bigger and
bigger, however, i did not want to refactor this in this PR. it is also
not really adding complexity
closes#6702
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Co-authored-by: link2xt <link2xt@testrun.org>
Co-authored-by: Hocuri <hocuri@gmx.de>
