Add ForwardButton to Sidebar

[tarun8718]

Signed-off-by: tarun8718 tarunkumar8718@gmail.com

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What's this PR do:
Adds Forward Button to the sidebar.

Screenshots

You have tested this PR on:

• Windows
• Linux/Ubuntu
• macOS

[octogonz]

Nice!

[tarun8718]

@andersk could you please review this?

[andersk]

My first question is, why is this functionality so important as to justify taking away space on the sidebar that could be used for more organizations? Can you explain the use case?

[octogonz]

As a new user, it took me a while to realize that the -> command existed at all. It is not found next to the <- button. It is under the History menu (where the <- command has a different name "Back"). Working in a public OSS forum where the majority of our participants are using Zulip for the first time, I can say that Zulip is not very intuitive for new users. So if something is counterintuitive for myself after months of using Zulip, it's likely that new users would also be confused by this.

BTW the desktop app for Slack has both <- and -> buttons. They solve the problem you mentioned by putting their buttons in the title bar:

[zulipbot]

Heads up @tarun8718, we just merged some commits that conflict with the changes your made in this pull request! You can review this repository's recent commits to see where the conflicts occur. Please rebase your feature branch against the upstream/main branch and resolve your pull request's merge conflicts accordingly.