Add option for allowing unknown devices in rooms

[koosc]

Allows for sending messages with unknown unverified devices in the room. While not ideal to have enabled, this can provide a workaround for #118 until verification is fully implemented. If this gets merged in I can make the corresponding change to the e2ee branch as well.

Testing

I tested sending with it both enabled and disabled when encountering the error in the linked issue, confirming messages could then be sent. Let me know if there are any other specific tests I should do though.

[maru-sama]

Hello,

Yes this would be a working interim solution until there is an easy workflow to confirm the other devices. or even auto-confirm the m in a channel. Right now my notifications do not work at all, since I started them with an encrypted room and do not want to loose the history so cannot simply change that.

[skylord123]

This looks good and should be a nice temporary solution for users being blocked.

@koosc Can you change the base to the dev branch instead of master? I work on the next release under the dev branch and merge to master once a release is made. You can see what is slated for the next release here: #121 I will mention this addition once it gets merged. as well

Thanks for the PR :)

[koosc]

Makes sense, I updated the target branch. It looks like it doesn't need any changes from the original commit.