compile with esp mqtt lib

lib/espMqttClient/scripts/CI/build_examples_pio.sh

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+#!/bin/bash
+
+# already done by workflow
+#pip install -U platformio
+#platformio update
+#pio pkg install --global --library me-no-dev/AsyncTCP
+#pio pkg install --global --library EspAsyncTCP
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+NC='\033[0m'
+
+lines=$(find ./examples/ -maxdepth 1 -mindepth 1 -type d)
+retval=0
+retvalpart=0
+while read line; do
+  if [[ "$line" != *esp8266 && "$line" != *esp32 && "$line" != *linux ]]; then
+    echo -e "========================== BUILDING $line =========================="
+    echo -e "${YELLOW}SKIPPING${NC}"
+    continue
+  fi
+  echo -e "========================== BUILDING $line =========================="
+  if [[ -e "$line/platformio.ini" ]]; then
+    output=$(platformio ci --lib="." --project-conf="$line/platformio.ini" $line 2>&1)
+    retvalpart=$?
+  else
+    if [[ "$line" == *esp8266 ]]; then
+      output=$(platformio ci --lib="." --project-conf="scripts/CI/platformio_esp8266.ini" $line 2>&1)
+      retvalpart=$?
+    else
+      output=$(platformio ci --lib="." --project-conf="scripts/CI/platformio_esp32.ini" $line 2>&1)
+      retvalpart=$?
+    fi
+    :
+  fi
+  if [ $retvalpart -ne 0 ]; then
+    echo "$output"
+    echo -e "Building $line ${RED}FAILED${NC}"
+    retval=1
+  else
+    echo -e "${GREEN}SUCCESS${NC}"
+  fi
+done <<< "$lines"
+
+# will be deleted together with container
+#pio pkg uninstall --global --library me-no-dev/AsyncTCP
+#pio pkg uninstall --global --library EspAsyncTCP
+
+exit "$retval"

lib/espMqttClient/scripts/CI/platformio_esp32.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32]
+platform = espressif32
+board = lolin32
+framework = arduino
+build_flags =
+  ;-Werror
+  -Wall
+  -Wextra

lib/espMqttClient/scripts/CI/platformio_esp8266.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp8266]
+platform = espressif8266
+board = d1_mini
+framework = arduino
+build_flags =
+  ;-Werror
+  -Wall
+  -Wextra