docs: document server module generator in CHANGELOG, README, help panel

- CHANGELOG: add server module generator description
- README: add AzerothCore integration paragraph with feature summary
- Help panel (F1): add "File → Generate Server Module" to export section

tools/editor/editor_ui.cpp

@@ -638,6 +638,7 @@ void EditorUI::renderMenuBar(EditorApp& app) {
             ImGui::BulletText("Ctrl+S — quick save (all formats + collision)");
             ImGui::BulletText("Ctrl+Shift+E — export content pack (.wcp)");
             ImGui::BulletText("File → Batch Convert Assets (M2→WOM, WMO→WOB)");
+            ImGui::BulletText("File → Generate Server Module (AzerothCore SQL)");
             ImGui::BulletText("Minimap: toggle slope overlay for collision preview");
         }
         ImGui::End();