add empty test files

unittests/tmtcpacket/CMakeLists.txt

@@ -3,4 +3,6 @@ target_sources(${FSFW_TEST_TGT} PRIVATE
   testCcsdsReader.cpp
   testPusTcCreator.cpp
   testPusTcReader.cpp
+  testPusTmCreator.cpp
+  testPusTmReader.cpp
 )

unittests/tmtcpacket/testPusTmCreator.cpp

@@ -0,0 +1,3 @@
+#include <catch2/catch_test_macros.hpp>
+
+TEST_CASE("PUS TM Creator", "[pus-tm-creator]") {}

unittests/tmtcpacket/testPusTmReader.cpp

@@ -0,0 +1,3 @@
+#include <catch2/catch_test_macros.hpp>
+
+TEST_CASE("PUS TM Reader", "[pus-tm-reader]") {}