Resolve "Create websocket client on Go for chat requests"

Description

• Create WebSocket client for handling communication with server
• Add start chat, join chat, clear chat and list chat commands
• Make openStream struct exportable and reuse it for listing chats
• Fix typo in welcome message when starting a chat
• Add libsystemd-dev as build/dev dependency

Checklist

• I have update updated the @version string in main.go. See https://semver.org/
• I have update CHANGELOG.md with a short description of changes.
• I have run swag init to update the swagger docs.

Closes #278 (closed)