add python readme

src/lib-python/README.md

@@ -0,0 +1,20 @@
+
+# Prerequisites
+- Install UV
+  https://docs.astral.sh/uv/getting-started/installation/
+    - If you have rust already, you can build from source with:
+      ```
+      cargo install --git https://github.com/astral-sh/uv uv
+      ```
+    - Also can use winget for a pre-compiled version:
+      ```
+      winget install --id=astral-sh.uv -e
+      ```
+
+# Running the tests
+ - `uv sync`
+ - `cd test`
+ - `uv run python run_test.py`
+
+ # Building / Publishing
+ todo