Add version command

Author: deadmanoz

docs/warnet.md

@@ -11,6 +11,8 @@ parameters in <angle brackets>.
 
 `warnet` commands are organized in a hierarchy of categories and subcommands.
 
+Check the version of warnet using `warnet version`.
+
 ## API Commands
 
 ### `warnet auth`

src/warnet/main.py

@@ -1,4 +1,5 @@
 import click
+import importlib.metadata
 
 from .admin import admin
 from .bitcoin import bitcoin
@@ -17,6 +18,14 @@
 def cli():
     pass
 
+@click.command()
+def version() -> None:
+    """Display the installed version of warnet"""
+    try:
+        version = importlib.metadata.version("warnet")
+        click.echo(f"warnet version {version}")
+    except importlib.metadata.PackageNotFoundError:
+        click.echo("warnet version unknown (package not installed)")
 
 cli.add_command(admin)
 cli.add_command(auth)
@@ -37,7 +46,7 @@ def cli():
 cli.add_command(status)
 cli.add_command(stop)
 cli.add_command(create)
-
+cli.add_command(version)
 
 if __name__ == "__main__":
     cli()