Add CLI entry point with version command

src/py_dvt_ate/cli/main.py

@@ -0,0 +1,40 @@
+"""Command-line interface for py_dvt_ate."""
+
+from typing import Annotated, Optional
+
+import typer
+
+from py_dvt_ate import __version__
+
+app = typer.Typer(
+    name="py-dvt-ate",
+    help="Coupled Physics DVT Simulation Platform",
+    add_completion=False,
+)
+
+
+def version_callback(value: bool) -> None:
+    """Print version and exit."""
+    if value:
+        typer.echo(f"py-dvt-ate version {__version__}")
+        raise typer.Exit()
+
+
+@app.callback()
+def main(
+    version: Annotated[
+        Optional[bool],
+        typer.Option(
+            "--version",
+            "-v",
+            help="Show version and exit.",
+            callback=version_callback,
+            is_eager=True,
+        ),
+    ] = None,
+) -> None:
+    """py-dvt-ate: Coupled Physics DVT Simulation Platform."""
+
+
+if __name__ == "__main__":
+    app()