Fix Git editor reword workflow and UI coverage

- show Git editor file paths instead of the submitted git command
- surface follow-up commit message editors during interactive rebase reword
- add rename-commit UI tests for editor and amend-message solution paths
- add broader embedded level solution scenarios for alternate Git workflows

app/src/main/java/solutions/tretter/githugandroid/levels/SubmoduleLevel.kt

@@ -40,5 +40,11 @@ internal fun submoduleLevel(): Level = level(
             "git config -f .gitmodules submodule.githug-include-me.url ../submodule-source",
             "git add .gitmodules",
         ),
+        levelTestCase(
+            "record submodule metadata url first",
+            "git config -f .gitmodules submodule.githug-include-me.url ../submodule-source",
+            "git config -f .gitmodules submodule.githug-include-me.path githug-include-me",
+            "git add .gitmodules",
+        ),
     ),
 )