"PlatformIO: init" not available

Hello,
I deleted my platformio.ini file for a project because the board setting wasn’t correct, but I don’t know how to restore it.
On some tutorials there was mentioned this above function but it isn’t available from the Command Palette.
Also I don’t know where I can enter “pio project init”.

What am I doing wrong and how can I get to a solution?

Thanks

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