write basic cli for init and import

corrlib/__init__.py

@@ -13,9 +13,11 @@ it can be easily seen wehere the respective measurement came from and ho it may
 For now, we are interested in collecting primary IObservables only, as these are the most computationally expensive and time consuming to calculate.
 """
 
+__app_name__ = "corrlib"
 
 from .main import *
 from .input import *
 from .initialization import *
 from .meas_io import *
 from .find import *
+from .version import __version__

corrlib/__main__.py

@@ -0,0 +1,9 @@
+from corrlib import cli, __app_name__
+
+
+def main():
+    cli.app(prog_name=__app_name__)
+
+
+if __name__ == "__main__":
+    main()

corrlib/cli.py

@@ -0,0 +1,60 @@
+from typing import Optional
+import typer
+from corrlib import __app_name__, __version__
+from .initialization import create
+from .toml import import_toml
+app = typer.Typer()
+
+
+def _version_callback(value: bool) -> None:
+    if value:
+        typer.echo(f"{__app_name__} v{__version__}")
+        raise typer.Exit()
+
+
+@app.command()
+def importer(
+    path: str = typer.Option(
+        str('./corrlib'),
+        "--dataset",
+        "-d",
+        prompt="Which corrlib instance?"
+    ),
+    file: str = typer.Argument(
+    ),
+    copy_file: bool = typer.Option(
+        bool(True),
+        "--save",
+        "-s",
+        prompt="Copy config file?",
+    ),
+) -> None:
+    import_toml(path, file, copy_file)
+    return
+
+
+@app.command()
+def init(
+    path: str = typer.Option(
+        str('./corrlib'),
+        "--dataset",
+        "-d",
+        prompt="Dataset location?",
+    ),
+) -> None:
+    create(path)
+    return
+
+
+@app.callback()
+def main(
+    version: Optional[bool] = typer.Option(
+        None,
+        "--version",
+        "-v",
+        help="Show the application's version and exit.",
+        callback=_version_callback,
+        is_eager=True,
+    )
+) -> None:
+    return

corrlib/version.py

@@ -0,0 +1 @@
+__version__ = "0.0.2"