Project file removal (#569)

* Deleted project file

* Add back SPM Package.resolved + .gitignore

* Generate project file on release builds

* Converge on single CI setup scripts within `ci_scripts/ci_common.sh`

* Fix unit tests

* Use new `ci_common/setup_github_actions_environment` setup script on all workflows

* Move lfs validation check to the pre-commit hooks. Remove validate-lfs github actions workflow

* Fix integration tests workflow

* Tweaks following code review

ci_scripts/ci_post_clone.sh

@@ -2,10 +2,12 @@
 
 source ci_common.sh
 
+setup_xcode_cloud_environment
+
+install_xcode_cloud_brew_dependencies
+
 if [ "$CI_WORKFLOW" = "Nightly" ]; then
-    setup_environment
-
-    install_brew_dependencies
-
     bundle exec fastlane config_nightly
+else
+    xcodegen
 fi