Add terraform version to stacks version command

docs/3.3.12. stacks version.md

@@ -4,17 +4,18 @@
 ```
 Usage: stacks version
 
-  Print the Stacks and Python version numbers 
+  Print the Stacks, Python, and Terraform version numbers 
 ```
 
 ## Description
 
-  Print the Stacks and Python version numbers and exit
+  Print the Stacks, Python, and Terraform version numbers and exit
 
 ## Example
 
 ```shell
 $ stacks version
-Stacks 2.0.8
+Stacks 2.0.12
 Python 3.12.8
+Terraform 1.9.8
 ```

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "stacks"
-version = "2.0.11"
+version = "2.0.12"
 description = "Stacks, the Terraform code pre-processor"
 readme = "README.md"
 requires-python = ">=3.10"

src/stacks/main.py

@@ -22,6 +22,8 @@ def cli():
 def version():
     print(f"Stacks {importlib.metadata.version('stacks')}")
     print(f"Python {platform.python_version()}")
+    terraform_output = helpers.run_command(cmd.config.TERRAFORM_PATH, "version", interactive=False)
+    print(f"Terraform {terraform_output.stdout.split('\n')[0].split(' ')[1][1:]}")
 
 
 @cli.command(hidden=True)  # hidden because it should not be used independently unless for advanced debugging purposes