Add chat.iamb.iamb

[ulyssa]

Please confirm your submission meets all the criteria

• Please describe your application briefly.
  • iamb is a terminal Matrix client that uses Vim keybindings
• I have read the App Requirements and App Maintenance pages.
• My pull request follows the instructions at App Submission.
• I have built and tested the submission locally.
• I am using only the minimal set of permissions.
  • I have included permissions needed for the client to access the network, upload/download files, access the desktop clipboard, and talk with org.freedesktop.Notifications over dbus.
• All assets referenced in the manifest are redistributable by any party. If not, the unredistributable parts are using an extra-data source type.
• I am an author/developer/upstream contributor of the project. If not, I contacted upstream developers about submitting their software to Flathub.
• The domain used for the application ID is controlled by the application developers either directly or through the code hosting (e.g. GitHub, GitLab, SourceForge, etc.). The application id guidelines are followed.
  • the website for iamb is iamb.chat, so I have made the ID chat.iamb.iamb.
• Any additional patches or files have been submitted to the upstream projects concerned.
  • The iamb repo already includes a .desktop file and icon; the only extra files here are the metainfo for flathub, and a .cargo/config.toml to make cargo use the downloaded sources when using --offline.

[bbhtt]

This should be upstream

[hfiguiere]

just clarify the myth: it is not flathub specific.

[bbhtt]

gif won't likely work on the website can you png/jpgs?

[bbhtt]

Missing content_rating, make sure to validate this file using https://docs.flathub.org/docs/for-app-authors/metainfo-guidelines/#validation

[hfiguiere]

Suggested change

<icon type="stock">chat.iamb.iamb</icon>

don't use stock icons.