Pico build in PR (#1617)

* Pico build in PR

* Missed refs

* Update main_matrix.yml

bin/build-rpi2040.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -e
+
+VERSION=`bin/buildinfo.py long`
+SHORT_VERSION=`bin/buildinfo.py short`
+
+OUTDIR=release/
+
+rm -f $OUTDIR/firmware*
+rm -r $OUTDIR/* || true
+
+# Make sure our submodules are current
+git submodule update 
+
+# Important to pull latest version of libs into all device flavors, otherwise some devices might be stale
+platformio lib update 
+
+echo "Building for $1 with $PLATFORMIO_BUILD_FLAGS"
+rm -f .pio/build/$1/firmware.*
+
+# The shell vars the build tool expects to find
+export APP_VERSION=$VERSION
+
+basename=firmware-$1-$VERSION
+
+pio run --environment $1 # -v
+SRCELF=.pio/build/$1/firmware.elf
+cp $SRCELF $OUTDIR/$basename.elf
+
+echo "Copying uf2 file"
+SRCBIN=.pio/build/$1/firmware.uf2
+cp $SRCBIN $OUTDIR/$basename.uf2
+
+cp bin/device-install.* $OUTDIR
+cp bin/device-update.* $OUTDIR