Ported template instantiation handling to cppast

tests/t00012/t00012.cc

@@ -3,6 +3,7 @@
 #include <numeric>
 #include <string>
 #include <variant>
+#include <vector>
 
 namespace clanguml {
 namespace t00012 {

tests/t00012/test_case.h

@@ -50,7 +50,7 @@ TEST_CASE("t00012", "[test-case][class]")
         puml, IsInstantiation(_A("B<int Is...>"), _A("B<1, 1, 1, 1>")));
     REQUIRE_THAT(puml,
         IsInstantiation(_A("C<T, int Is...>"),
-            _A("C<std::map<int, "
+            _A("C<std::map<int,"
                "std::vector<std::vector<std::vector<std::string>>>>, 3, 3, "
                "3>")));