Publish open api spec on AWX for community use (#16221)

* Added link and ref to openAPI spec for community

* Update docs/docsite/rst/contributor/openapi_link.rst

Co-authored-by: Don Naro <dnaro@redhat.com>

* add sphinxcontrib-redoc to requirements

* sphinxcontrib.redoc configuration

* create openapi directory and files

* update download script for both schema files

* suppress warning for redoc

* update labels

* fix extra closing parenthesis

* update schema url

* exclude doc config and download script

The Sphinx configuration (conf.py) and schema download script
(download-json.py) are not application logic and used only for building
documentation. Coverage requirements for these files are overkill.

* exclude only the sphinx config file

---------

Co-authored-by: Don Naro <dnaro@redhat.com>

docs/docsite/requirements.txt

@@ -8,6 +8,10 @@ alabaster==1.0.0
     # via sphinx
 ansible-pygments==0.1.1
     # via sphinx-ansible-theme
+attrs==25.4.0
+    # via
+    #   jsonschema
+    #   referencing
 babel==2.16.0
     # via sphinx
 certifi==2024.8.30
@@ -27,6 +31,11 @@ jinja2==3.1.4
     # via
     #   -r docs/docsite/requirements.in
     #   sphinx
+    #   sphinxcontrib-redoc
+jsonschema==4.26.0
+    # via sphinxcontrib-redoc
+jsonschema-specifications==2025.9.1
+    # via jsonschema
 markupsafe==3.0.2
     # via jinja2
 packaging==24.2
@@ -36,9 +45,21 @@ pygments==2.18.0
     #   ansible-pygments
     #   sphinx
 pyyaml==6.0.2
-    # via -r docs/docsite/requirements.in
+    # via
+    #   -r docs/docsite/requirements.in
+    #   sphinxcontrib-redoc
+referencing==0.37.0
+    # via
+    #   jsonschema
+    #   jsonschema-specifications
 requests==2.32.3
     # via sphinx
+rpds-py==0.30.0
+    # via
+    #   jsonschema
+    #   referencing
+six==1.17.0
+    # via sphinxcontrib-redoc
 snowballstemmer==2.2.0
     # via sphinx
 sphinx==8.1.3
@@ -48,6 +69,7 @@ sphinx==8.1.3
     #   sphinx-notfound-page
     #   sphinx-rtd-theme
     #   sphinxcontrib-jquery
+    #   sphinxcontrib-redoc
 sphinx-ansible-theme==0.10.3
     # via -r docs/docsite/requirements.in
 sphinx-notfound-page==1.0.4
@@ -66,7 +88,15 @@ sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-qthelp==2.0.0
     # via sphinx
+sphinxcontrib-redoc==1.6.0
+    # via -r docs/docsite/requirements.in
 sphinxcontrib-serializinghtml==2.0.0
     # via sphinx
+typing-extensions==4.15.0
+    # via referencing
 urllib3==2.2.3
     # via requests
+
+# The following packages are considered to be unsafe in a requirements file:
+setuptools==80.9.0
+    # via -r docs/docsite/requirements.in