UX: Suggest common git commands in terminal

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Problem

The terminal lacks some quality of life features that many git users have become accustomed to in their local IDEs. For example, we don't show the branch name and don't suggest common git commands. This can feel tedious even for experienced users as they need to recall extra information.

Potential solution

Suggest common git commands as user types. Example 1, Example 2.

Supporting evidence:

From UX Scorcard:

• "I don't always remember all the commands"
• “I’d expect to be able to hit tab and have that filled in like my local IDE.”