Add Pip Docs (#664)

## Summary

Adds documentation for using the new `pip` plugin for Python

## How was it tested?

Localhost

---------

Signed-off-by: John Lago <[email protected]>
Co-authored-by: Greg Curtis <[email protected]>

Author: Lagoja

docs/app/docs/devbox_examples/languages/python.md

@@ -26,6 +26,30 @@ Other versions available include:
 * python39 (Python 3.9)
 * python311 (Python 3.11)
 
+## Installing Packages with Pip
+
+[**Example Repo**](https://github.com/jetpack-io/devbox-examples/tree/main/development/python/pip)
+
+[![Open In Devbox.sh](https://jetpack.io/img/devbox/open-in-devbox.svg)](https://devbox.sh/github.com/jetpack-io/devbox-examples?folder=development/python/pip)
+
+[pip](https://pip.pypa.io/en/stable/) is the standard package manager for Python. Since it installs python packages globally, we strongly recommend using a virtual environment.
+
+You can install `pip` by running `devbox add python3xxPackages.pip`, where `3xx` is the version of Python you want to install. This will also install the pip plugin for Devbox, which automatically creates a virtual environment for installing your packages locally
+
+Your virtual environment is created in the `.devbox/virtenv/pip` directory by default, and can be activated by running `source $VENV_DIR/bin/activate` in your devbox shell. You can activate the virtual environment automatically using the init_hook of your `devbox.json`:
+
+```json
+{
+    "packages": [
+        "python310",
+        "python310Packages.pip"
+    ],
+    "shell": {
+        "init_hook": ". $VENV_DIR/bin/activate"
+    }
+}
+``` 
+
 ## Pipenv
 
 [**Example Repo**](https://github.com/jetpack-io/devbox-examples/tree/main/development/python/pipenv)

docs/app/docs/guides/plugins.md

@@ -15,6 +15,7 @@ Plugins are available for the following packages. You can activate the plugins f
 * [Redis](../devbox_examples/databases/redis.md) (redis)
 * [PHP](../devbox_examples/languages/php.md) (php, php80, php81, php82)
 * [Ruby](../devbox_examples/languages/ruby.md)(ruby, ruby_3_1, ruby_3_0)
+* [Pip](../devbox_examples/languages/python.md) (python39Packages.pip, python310Packages.pip, python311Packages.pip)
 
 Our team is rapidly adding new plugins to Devbox. If you want to request a plugin, please file an issue in the Devbox Repo.