Create action submodule, add various examples

examples/selection_demo.py

@@ -0,0 +1,22 @@
+import asyncio
+
+from falyx.selection import (
+    SelectionOption,
+    prompt_for_selection,
+    render_selection_dict_table,
+)
+
+menu = {
+    "A": SelectionOption("Run diagnostics", lambda: print("Running diagnostics...")),
+    "B": SelectionOption("Deploy to staging", lambda: print("Deploying...")),
+}
+
+table = render_selection_dict_table(
+    title="Main Menu",
+    selections=menu,
+)
+
+key = asyncio.run(prompt_for_selection(menu.keys(), table))
+print(f"You selected: {key}")
+
+menu[key.upper()].value()