chore: add entry for experimental samples directory

Author: brionmario

.gitignore

@@ -46,3 +46,7 @@ Thumbs.db
 .env*
 .cursor/rules/nx-rules.mdc
 .github/instructions/nx.instructions.md
+
+# Experimental Samples
+# NOTE to Developers: Please use this samples folder for experimental code only and do not commit.
+samples/__experimental__/