spi: implement async HAL and transform from Spi to SpiDma and back

Author: astapleton

Cargo.toml

@@ -73,6 +73,7 @@ stm32h5 = { package = "stm32h5", version = "0.16.0" }
 fugit = "0.3.7"
 embedded-dma = "0.2"
 embedded-hal = "1.0.0"
+embedded-hal-async = "1.0.0"
 defmt = { version = "1.0.0", optional = true }
 paste = "1.0.15"
 log = { version = "0.4.20", optional = true}