ui : manage colors and ensure fw using ssd1306 still compile

variants/lilygo_tbeam/platformio.ini

@@ -39,7 +39,7 @@ build_flags =
 ;  -D MESH_DEBUG=1
 build_src_filter = ${LilyGo_TBeam.build_src_filter}
   +<helpers/esp32/*.cpp>
-  +<helpers/ui/*.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
   +<../examples/companion_radio>
 lib_deps =
   ${LilyGo_TBeam.lib_deps}
@@ -57,7 +57,7 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${LilyGo_TBeam.build_src_filter}
-  +<helpers/ui/*.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
   +<../examples/simple_repeater>
 lib_deps =
   ${LilyGo_TBeam.lib_deps}