add kiss radio env to most of the variants

variants/heltec_tracker_v2/platformio.ini

@@ -187,7 +187,7 @@ build_flags =
   -D WIFI_DEBUG_LOGGING=1
   -D WIFI_SSID='"myssid"'
   -D WIFI_PWD='"mypwd"'
-  -D OFFLINE_QUEUE_SIZE=256  
+  -D OFFLINE_QUEUE_SIZE=256
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${Heltec_tracker_v2.build_src_filter}
@@ -217,3 +217,8 @@ build_src_filter = ${Heltec_tracker_v2.build_src_filter}
 lib_deps =
   ${Heltec_tracker_v2.lib_deps}
   ${esp32_ota.lib_deps}
+
+[env:heltec_tracker_v2_kiss_modem]
+extends = Heltec_tracker_v2
+build_src_filter = ${Heltec_tracker_v2.build_src_filter}
+  +<../examples/kiss_modem/>