add kiss radio env to most of the variants

variants/mesh_pocket/platformio.ini

@@ -109,4 +109,9 @@ build_src_filter = ${Mesh_pocket.build_src_filter}
   +<../examples/companion_radio/ui-new/*.cpp>
 lib_deps =
   ${Mesh_pocket.lib_deps}
-  densaugeo/base64 @ ~1.4.0
+  densaugeo/base64 @ ~1.4.0
+
+[env:Mesh_pocket_kiss_modem]
+extends = Mesh_pocket
+build_src_filter = ${Mesh_pocket.build_src_filter}
+  +<../examples/kiss_modem/>