chg: explicit search index layout

src/.idea/indexLayout.xml

@@ -3,6 +3,8 @@
   <component name="UserContentModel">
     <attachedFolders />
     <explicitIncludes />
-    <explicitExcludes />
+    <explicitExcludes>
+      <Path>.godot</Path>
+    </explicitExcludes>
   </component>
 </project>

src/project.godot

@@ -1,4 +1,6 @@
-; Engine configuration file.
+; Engine configuration file.; Format:
+;   [section] ; section goes between []
+;
 ; It's best edited using the editor UI and not directly,
 ; since the parameters that go here are not all obvious.
 ;