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

usermods/BH1750_v2/usermod_bh1750.h

@@ -226,7 +226,7 @@ public:
   }
 
   void appendConfigData() {
-    oappend(SET_F("addHB('")); oappend(_name); oappend("');");
+    oappend(SET_F("addHB('BH1750');");
     // WLEDMM this usermod can ONLY use HW_I2C - so always use globals
     //oappend(SET_F("addInfo('BH1750:pin[]',0,'','I2C SCL');"));
     //oappend(SET_F("rOption('BH1750:pin[]',0,'use global (")); oappendi(i2c_scl); oappend(")',-1);");