[NOT FOR MERGE] Add trivial program to debug certs issues

test-ssl/test_ssl.cc

@@ -0,0 +1,16 @@
+#define CPPHTTPLIB_OPENSSL_SUPPORT
+#include "httplib.hpp"
+
+using namespace duckdb_httplib_openssl;
+
+int main() {
+  Client client("https://ui.duckdb.org");
+  auto res = client.Get("/");
+  if (res) {
+    std::cout << "Status: " << res->status << std::endl;
+    std::cout << "Body: " << res->body.substr(0, 42) << "... (" << res->body.size() << ")" << std::endl;
+  } else {
+    std::cout << "Error: " << res.error() << std::endl;
+  }
+  return 0;
+}