add missing build flags for failed builds

variants/heltec_e213/platformio.ini

@@ -86,6 +86,8 @@ build_flags =
   -D ADVERT_NAME='"Heltec E213 Repeater"'
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
 build_src_filter = ${Heltec_E213_base.build_src_filter}
   +<helpers/ui/E213Display.cpp>
   +<../examples/simple_repeater>

variants/heltec_e290/platformio.ini

@@ -82,6 +82,8 @@ build_flags =
   -D ADVERT_NAME='"Heltec E290 Repeater"'
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
 build_src_filter = ${Heltec_E290_base.build_src_filter}
   +<helpers/ui/E290Display.cpp>
   +<../examples/simple_repeater>

variants/heltec_t190/platformio.ini

@@ -88,6 +88,8 @@ build_flags =
   -D ADVERT_NAME='"Heltec T190 Repeater"'
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
 build_src_filter = ${Heltec_T190_base.build_src_filter}
   +<../examples/simple_repeater>
 lib_deps =

variants/heltec_wireless_paper/platformio.ini

@@ -61,6 +61,8 @@ build_flags =
   -D ADVERT_NAME='"Heltec WP Repeater"'
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
 build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
   +<helpers/ui/E213Display.cpp>
   +<../examples/simple_repeater>