feat: adding auto generated docs for the cli

docs/api-reference/cli/.buildinfo

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+# Sphinx build info version 1
+# This file records the configuration used when building these files. When it is not found, a full rebuild will be done.
+config: 0b62b979d313b0a9ac6605cbce098895
+tags: 645f666f9bcd5a90fca523b33c5a78b7

docs/api-reference/cli/_sources/cli.rst.txt

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+############
+CLI Reference
+############
+
+This page contains the auto-generated command-line reference for the `adk` tool.
+
+.. click:: google.adk.cli.cli_tools_click:main
+   :prog: adk
+   :nested: full

docs/api-reference/cli/_sources/index.rst.txt

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+.. adk cli documentation master file, created by
+   sphinx-quickstart on Mon Aug 11 11:48:40 2025.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+adk cli documentation
+=====================
+
+Add your content using ``reStructuredText`` syntax. See the
+`reStructuredText <https://www.sphinx-doc.org/en/master/usage/restructuredtext/index.html>`_
+documentation for details.
+
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   cli