This is already tracked in Sparkfun Edge Cortex M4 MCU Board Support · Issue #2709 · platformio/platformio-core · GitHub, though there haven’t been many developments since. The Sparkfun Artemis under the hood is just an ARM Cortex-M4 based Microcontroller called the “ambiq micro Apollo3 Blue” with an Arduino Core and also a vendor SDK (“AmbiqSuite SDK”).
An experimental version seems to have been created by a user at GitHub - nigelb/platform-apollo3blue: AmbiqMicro Apollo 3 Blue: development platform for PlatformIO supporting all known Artemis boards.