add labs folder

labs/README.md

@@ -0,0 +1,16 @@
+# Experiments
+
+This directory contains experiments, work-in-progress crates, or other code and documentation, that
+do not fall under the same stability guarantees as the main crates (`matrix-sdk`,
+`matrix-sdk-crypto`, etc.).
+
+Code and documentation here may become unmaintained or outdated, and possibly removed at any time.
+
+---
+
+That said, this directory is meant to freely explore unconventional or interesting ways the Matrix
+Rust SDK can evolve, feel free to propose an experiment.
+
+Current experiments;
+
+TBD