Update doc (#20)

* Add list.py and desc

* add operations

* add structure

* update readme

* format

* update readme

scenarionet/list.py

@@ -0,0 +1,33 @@
+import pkgutil
+import importlib
+import argparse
+
+desc = "List all available operations"
+
+
+def list_modules(package):
+    ret = [name for _, name, _ in pkgutil.iter_modules(package.__path__)]
+    ret.remove("builder")
+    ret.remove("converter")
+    ret.remove("verifier")
+    ret.remove("common_utils")
+    return ret
+
+
+if __name__ == '__main__':
+    import scenarionet
+
+    # exclude current path
+    # print(d)
+    parser = argparse.ArgumentParser(description=desc)
+    parser.parse_args()
+    modules = list_modules(scenarionet)
+    print("\nAvailable operations (usage python -m scenarionet.operation): \n")
+    for module in modules:
+        # module="convert_nuplan"
+        print(
+            "{}scenarionet.{}:   {} \n".format(
+                " " * 5, module,
+                importlib.import_module("scenarionet.{}".format(module)).desc
+            )
+        )