added a lot of new scripts

linux/setup git.sh

@@ -3,4 +3,20 @@
 
 
 #store credentals
-git config --global credential.helper store
+git config --global credential.helper store
+
+
+
+#add upstream (when forked)
+git remote add upstream https://github.com/petals-infra/health.petals.dev.git
+
+
+# merge upstream
+git fetch upstream
+git checkout main
+git merge upstream/main --allow-unrelated-histories
+git commit -m "Merged upstream/main"
+
+# remove upstream
+git remote remove upstream
+git remote -v