Add some test for issue #5084 with resource-path and embed resources

Author: cderv

tests/docs/smoke-all/2023/04/04/dummy/temp.png

@@ -0,0 +1,16 @@
+---
+format:
+  html:
+    embed-resources: true
+resource-path: ["dummy"]
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        - ['img[src^="data:image/png;base64"]']
+        - ['img[src^="temp.png"]']
+---
+
+# show the plot
+
+![alt text](temp.png "tooltip")