feat(FN-1889): add executor project model UI to settings modal

- Add execution model selection dropdown to project settings modal
- Include execution lane in project model lanes filter for better context
- Add test coverage for execution model in project settings
- Include changeset for @gsxdsm/fusion package

.changeset/add-executor-project-model-ui.md

@@ -0,0 +1,5 @@
+---
+"@gsxdsm/fusion": patch
+---
+
+Expose executor model setting in Project Models settings section