Add test to demonstrate we have the same quirks as vim

As pointed out in the PR, this is a semi-naive quote match that behaves
the same as vim. Putting it in a test case to show that this is the
desired behavior.

test/mode/modeNormal.test.ts

@@ -387,6 +387,14 @@ suite("Mode Normal", () => {
       endMode: ModeName.Insert
     });
 
+    newTest({
+      title: "Emulates vim's behavior sandwiched between double quoted strings for 'ci\"'",
+      start: ['"one" |"two"'],
+      keysPressed: 'ci"',
+      end: ['"one"|"two"'],
+      endMode: ModeName.Insert
+    });
+
     newTest({
       title: "will fail when ca\" ahead of quoted string",
       start: ['"one" |two'],