[FR] button multiplexing · MarlinFirmware/Marlin

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C: User InterfaceT: Feature Requestgood first issue

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説明

Is your feature request related to a problem? Please describe.

Button support has been added recently, but most motherboards don't have many pins free. Multiplexing will allow more buttons to be operated.

Are you looking for hardware support?

No response

Describe the feature you want

In the button configuration, I would like to be able to set the pins that support the buttons multiplexing. Like in the table below with pin names and button behaviour.

Screenshot_1

Additional context