Added recent conversations

[sahith-ch]

What does this PR do, and why?

This PR integrates the recent conversations feature into Zulip-Terminal, allowing users to quickly access their latest chats. This improves usability by reducing navigation time and making it easier to switch between discussions.

External discussion & connections

• Discussed in #zulip-terminal in topic
• [x ] Fully fixes Add Recent Conversations Feature #1565
• Partially fixes issue #
• Builds upon previous unmerged work in PR #
• Is a follow-up to work in PR #
• Requires merge of PR #
• Merge will enable work on #

How did you test this?

• Manually - Behavioral changes
• [ x] Manually - Visual changes
• Adapting existing automated tests
• Adding automated tests for new behavior (or missing tests)
• Existing automated tests should already cover this (only a refactor of tested code)

Visual changes

[zulipbot]

Hello @sahith-ch, it seems like you have referenced #1565 in your pull request description, but you have not referenced them in your commit message description(s). Referencing an issue in a commit message automatically closes the corresponding issue when the commit is merged, which makes the issue tracker easier to manage.

Please run git commit --amend in your command line client to amend your commit message description with Fixes #1565..

An example of a correctly-formatted commit:

commit fabd5e450374c8dde65ec35f02140383940fe146
Author: zulipbot
Date:   Sat Mar 18 13:42:40 2017 -0700

    pull requests: Check PR commits reference when issue is referenced.

    Fixes #51.

To learn how to write a great commit message, please refer to our guide.