[docs] Document driver mode (#1890)

## Description

Adds documentation for driver mode because it currently isn't
documented.

Closes #1824

## Meta

Merge checklist:
- [x] Pull Request title is [short, imperative
summary](https://cbea.ms/git-commit/) of proposed changes
- [x] The description documents the _what_ and _why_
- [x] If this PR changes behavior or adds a feature, user documentation
is updated
- [x] If this PR touches photon-serde, all messages have been
regenerated and hashes have not changed unexpectedly
- [x] If this PR touches configuration, this is backwards compatible
with settings back to v2024.3.1
- [x] If this PR touches pipeline settings or anything related to data
exchange, the frontend typing is updated
- [x] If this PR addresses a bug, a regression test for it is added

---------

Co-authored-by: Gold856 <117957790+Gold856@users.noreply.github.com>
Co-authored-by: Sam Freund <techguy763@gmail.com>

docs/source/docs/driver-mode/index.md

@@ -0,0 +1,27 @@
+# Driver Mode
+
+Driver Mode is a type of pipeline that doesn't run any vision processing, intended for viewing from a human.
+
+## Enabling Driver Mode
+
+To enable Driver Mode, toggle the switch at the top of the Dashboard page for a selected camera.
+
+```{image} images/driver-mode-dashboard.png
+:align: center
+:alt: Driver Mode Toggle in the Dashboard Page
+```
+
+Alternatively, visit the camera settings page and toggle the "Driver Mode" switch for a selected camera.
+
+```{image} images/driver-mode-camera-settings.png
+:align: center
+:alt: Driver Mode Toggle in the Camera Settings Page
+```
+
+## Hiding the Crosshair
+When Driver Mode is enabled, a green crosshair will be shown at the center of the camera stream. If you do not want to show the green crosshair at the center of the camera stream, toggle the "Crosshair" switch under the Input tab, as shown in the image below.
+
+```{image} images/crosshair-switch.png
+:align: center
+:alt: Crosshair Switch
+```