boards: Add MCH2022 badge

I haven't fully tested this badge because I don't have the physical
hardware but I have followed the pinout from the website.

src/machine/board_mch2022.go

@@ -0,0 +1,29 @@
+//go:build mch2022
+// +build mch2022
+
+package machine
+
+// See: https://badge.team/docs/badges/mch2022/pinout/
+
+const (
+	UART_TX_PIN Pin = 1
+	UART_RX_PIN Pin = 3
+
+	WS2812 Pin = 5
+
+	PowerOn Pin = 19 // Set high to enable power to LEDs and SD card
+
+	// I2C pins
+	SDA_PIN Pin = 22
+	SCL_PIN Pin = 21
+
+	// SPI and related pins (ICE40 and LCD).
+	LCD_RESET         Pin = 25
+	LCD_MODE          Pin = 26
+	LCD_DC            Pin = 33
+	SPI0_SCK_PIN      Pin = 18
+	SPI0_SDO_PIN      Pin = 23
+	SPI0_SDI_PIN      Pin = 35 // connected to ICE40
+	SPI0_CS_ICE40_PIN Pin = 27
+	SPI0_CS_LCD_PIN   Pin = 32
+)