New esp8266_4MB_max entry to test usermods / i2c

pio.ini: add esp8266_4MB_max with pir, dallas, relay  games (to test IMU) 

addHB: use string literal instead of var

appendConfigData to um multirelay

platformio.ini

@@ -45,6 +45,7 @@ default_envs =
   esp32_16MB_max
   esp32_16MB_all
   esp8266_4MB_min
+  esp8266_4MB_max
   esp32_4MB_PSRAM_max 
   esp32S3_8MB_max
   wemos_shield_esp32_4MB_max
@@ -807,18 +808,44 @@ extends = env:d1_mini
 upload_speed = 460800 ;115200
 build_flags = ${common.build_flags_esp8266}
   -D WLED_RELEASE_NAME=esp8266_4MB_min
-  ; -D WLED_DEBUG
   -D WLED_DISABLE_ALEXA
   -D WLED_DISABLE_BLYNK
   -D WLED_DISABLE_HUESYNC
   ; -D WLED_DISABLE_2D
-  ; -D USERMOD_AUDIOREACTIVE
-  ; -D USERMOD_CUSTOMEFFECTS ; to be done
   ; -UWLED_USE_MY_CONFIG
+  ; -D WLED_DEBUG
 ; monitor_filters = esp8266_exception_decoder
 ; RAM:   [======    ]  59.3% (used 48608 bytes from 81920 bytes)
 ; Flash: [========  ]  77.0% (used 804176 bytes from 1044464 bytes)
 
+[env:esp8266_4MB_max] ;WLEDMM: WIP
+extends = env:d1_mini
+upload_speed = 460800 ;115200
+build_flags = ${common.build_flags_esp8266}
+  -D WLED_RELEASE_NAME=esp8266_4MB_max
+  -D WLED_MAX_USERMODS=5 ; default only 4-6
+  -D WLED_DISABLE_ALEXA
+  -D WLED_DISABLE_BLYNK
+  -D WLED_DISABLE_HUESYNC
+  ; -D USERMOD_AUDIOREACTIVE
+  ; -D USERMOD_CUSTOMEFFECTS ; to be done
+  ; -UWLED_USE_MY_CONFIG
+  -D USERMOD_PIRSWITCH
+  -D USERMOD_DALLASTEMPERATURE ;; disabled because it hangs during usermod setup on -S3 (autodetect broken?)
+  -D USERMOD_MULTI_RELAY
+  ; -D USE_ALT_DISPLAY ; new versions of USERMOD_FOUR_LINE_DISPLAY and USERMOD_ROTARY_ENCODER_UI
+  ; -D USERMOD_FOUR_LINE_DISPLAY
+  -D USERMOD_MPU6050_IMU ; gyro/accelero for USERMOD_GAMES (ONLY WORKS IF USERMOD_FOUR_LINE_DISPLAY NOT INCLUDED - I2C SHARING BUG)
+  -D USERMOD_GAMES ; WLEDMM usermod
+  -D WLED_DEBUG
+; monitor_filters = esp8266_exception_decoder
+lib_deps = ${esp8266.lib_deps}
+  OneWire@~2.3.5 ; used for USERMOD_FOUR_LINE_DISPLAY and USERMOD_DALLASTEMPERATURE
+  ; olikraus/U8g2@ ^2.34.5 ; used for USERMOD_FOUR_LINE_DISPLAY -> need newer version with bugfixes for arduino-esp32 v2.0.4 (Wire inititialization) 
+  ElectronicCats/MPU6050 @ 0.6.0 ; used for USERMOD_MPU6050_IMU
+; RAM:   [======    ]  61.5% (used 50344 bytes from 81920 bytes)
+; Flash: [========  ]  81.8% (used 854444 bytes from 1044464 bytes)
+
 [env:esp8266pro_16MB_min]
 extends = env:d1_mini
 board = d1_mini_pro ;; "D1 mini pro": ESP8266EX, 160MHz, 80KB RAM, 16MB Flash