Add two more READMEs

Author: felsenhower

benchmark/README.md

@@ -0,0 +1,15 @@
+# REST-RPC – Benchmarks
+
+## Usage
+
+To run the small benchmark, run
+
+```shell
+$ uv run bench.py
+```
+
+To generate the `benchmark.png`, run:
+
+```shell
+$ uv run plot.py
+```

tests/README.md

@@ -0,0 +1,7 @@
+# REST-RPC – Tests
+
+## Usage
+
+```shell
+$ uv run pytest
+```