Github action runs on job matrix now for parallel operation (both build and check) (#1202)

* Build matrix for parallel jobs

bin/build-native.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+set -e
+
+VERSION=`bin/buildinfo.py long`
+SHORT_VERSION=`bin/buildinfo.py short`
+
+OUTDIR=release/
+
+rm -f $OUTDIR/firmware*
+
+mkdir -p $OUTDIR/
+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 
+
+pio run --environment native
+cp .pio/build/native/program $OUTDIR/meshtasticd_linux_amd64
+
+cp bin/device-install.* $OUTDIR
+cp bin/device-update.* $OUTDIR
+