Added zip files to release resources, combined with flash script

scripts/esp32/flash.sh

@@ -0,0 +1,40 @@
+#!/bin/sh
+
+if [ -z "$1" ];then
+    echo "Usage: "
+    echo "  Flashing first time            :   $0 flash /dev/ttyUSB0"
+    echo "  When upgrading to new version  :   $0 upgrade /dev/ttyUSB0"
+    echo "    NOTE: Replace /dev/ttyUSB0 with correct port"
+    exit 1
+fi
+
+if [ -z "$2" ];then
+    echo "Please specify port"
+    exit 1
+fi
+
+esptool=`which esptool`
+if [ -z "$esptool" ];then
+    esptool=`which esptool.py`
+fi
+if [ -z "$esptool" ];then
+    if [ -f esptool.py ];then
+        esptool="esptool.py"
+    fi
+fi
+if [ -z "$esptool" ];then
+    echo "esptool.py not available to run following command: "
+    esptool="echo esptool.py"
+fi
+
+if [ "$1" = "flash" ];then
+    $esptool --chip esp32 --port $2 --baud 460800 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect \
+    0x1000 bootloader_dio_40m.bin \
+    0x8000 partitions.bin \
+    0xe000 boot_app0.bin \
+    0x10000 firmware.bin
+    exit $?
+elif [ "$1" = "upgrade" ];then
+    $esptool --chip esp32 --port $2 --baud 460800 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x10000 firmware.bin
+    exit $?
+fi