Because AutomationView is built as an extension within the VS Code environment, your project is entirely file-based.
Using the User Interface (Button):
Click on the Source Control icon (branch symbol) located in the Activity Bar (the far-left sidebar). From there, you will find buttons to Initialize Repository, stage your .seq and .machine files, and commit your changes.
Using the Command Palette:
It is also possible to manage versioning via the Command Palette:
Ctrl+Shift+P / Cmd+Shift+P).Git: to see all available version control commands, such as Git: Initialize Repository or Git: Commit.