Merge branch 'advanced/01-git-stash'

Author: Amin Jafari

git-stash.md

@@ -0,0 +1,20 @@
+# Git Stash
+
+The `git stash` command temporarily saves changes.
+
+## Usage
+```bash
+git stash          # Save changes
+git stash pop      # Reapply changes
+```
+## Explanation
+- Use git stash to save uncommitted changes and switch branches.
+
+- Use git stash pop to reapply the saved changes.
+
+## Example
+```bash
+git stash
+git checkout main
+git stash pop
+```