Add initial transponder for Net Digital

Adds the initial transponder used on Net Digital on Sao Paulo state (specifically at Sao Jose dos Campos).

The other transponders are automatically obtained, so, there's no need to add them all.

new file mode 100644
@@ -0,0 +1,6 @@
+# Net Digital
+# Just the initial transponder is enough
+
+# freq sr fec mod
+# Found on Sao Jose dos Campos, SP
+C 573000000 5217000 NONE QAM256