Enhance find_package(Trilinos) test

Add a dummy executable that depends on all of the built Trilinos
libraries to attempt to exercise some more failure cases.

Specifically, this is to try and make visible the failure where imported
toolchain libraries (e.g. libm) will not work in downstream builds due
to incomplete install logic.

User Support Ticket(s) or Story Referenced: TRILFRAME-601 trilinos#10081

packages/TrilinosInstallTests/find_package_Trilinos/CMakeLists.txt

@@ -9,3 +9,6 @@ find_package(Trilinos REQUIRED)
 message("Trilinos_FOUND = '${Trilinos_FOUND}'")
 message("Trilinos_SELECTED_PACAKGES_LIST = '${Trilinos_SELECTED_PACAKGES_LIST}'")
 message("Trilinos_LIBRARIES = '${Trilinos_LIBRARIES}'")
+
+add_executable(hello hello.c)
+target_link_libraries(hello PUBLIC ${Trilinos_LIBRARIES})

packages/TrilinosInstallTests/find_package_Trilinos/hello.c

@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+int main(int argc, char** argv) {
+    printf("Hello, world!");
+}