[UIUX] Please make it easy to use the project search feature

[kussumma]

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Describe the feature

Currently, for me as a new user of Zed, it is quite difficult to immediately recognize the features it has. for me when working with large project, I really rely on the project search feature and I observed in Zed, it turns out I couldn't find it quickly in the editor, so I had to search on Google how to trigger the project search and found 2 ways, access via the edit menu in the macOS menu bar and with a shortcut, which I think is not newbie friendly. So to increase its usability, please consider displaying access via an icon that is visible directly in the editor (in my opinion there is still enough space in the bottom bar). Lastly, I think Zed is a very cool editor, thank you!!!

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