refactor: introduce requirements.txt

Author: Ivor Caldwell

.gitignore

@@ -2,4 +2,5 @@
 .vscode
 .cache
 node_modules/
-site/
+site/
+venv/

CONTRIBUTING.md

@@ -100,17 +100,9 @@ To install MkDocs your will require python 3.X once you have this you can instal
 MkDocs requires an `mkdocs.yml` file for configuration and navigation control, the one supplied in the repo is the one used for github pages but should work fine locally also.
 
 ``` bash
-pip install mkdocs-material
-pip install markdown-callouts
-pip install mkdocs-git-revision-date-localized-plugin
-pip install mkdocs-git-committers-plugin-2
-pip install mkdocs-print-site-plugin
-pip install mkdocs-tech-docs-template
-pip install mkdocs-redirects
-pip install mkdocs-awesome-nav
+pip install -r requirements.txt
 
 # Only needed if you want to generate site PDF locally
-pip install pytest-playwright
 playwright install --with-deps
 playwright install chrome --with-deps
 ```

requirements.txt

@@ -0,0 +1,58 @@
+annotated-types==0.7.0
+babel==2.17.0
+backrefs==5.8
+bracex==2.5.post1
+certifi==2025.4.26
+charset-normalizer==3.4.2
+click==8.2.0
+colorama==0.4.6
+ghp-import==2.1.0
+gitdb==4.0.12
+GitPython==3.1.44
+greenlet==3.2.2
+idna==3.10
+iniconfig==2.1.0
+Jinja2==3.1.6
+Markdown==3.8
+markdown-callouts==0.4.0
+MarkupSafe==3.0.2
+mergedeep==1.3.4
+mkdocs==1.6.1
+mkdocs-awesome-nav==3.1.2
+mkdocs-get-deps==0.2.0
+mkdocs-git-committers-plugin-2==2.5.0
+mkdocs-git-revision-date-localized-plugin==1.4.5
+mkdocs-material==9.6.14
+mkdocs-material-extensions==1.3.1
+mkdocs-print-site-plugin==2.7.3
+mkdocs-redirects==1.2.2
+mkdocs-tech-docs-template==0.1.2
+natsort==8.4.0
+packaging==25.0
+paginate==0.5.7
+pathspec==0.12.1
+platformdirs==4.3.8
+playwright==1.52.0
+pluggy==1.6.0
+pydantic==2.11.4
+pydantic_core==2.33.2
+pyee==13.0.0
+Pygments==2.19.1
+pymdown-extensions==10.15
+pytest==8.3.5
+pytest-base-url==2.1.0
+pytest-playwright==0.7.0
+python-dateutil==2.9.0.post0
+python-slugify==8.0.4
+pytz==2025.2
+PyYAML==6.0.2
+pyyaml_env_tag==1.1
+requests==2.32.3
+six==1.17.0
+smmap==5.0.2
+text-unidecode==1.3
+typing-inspection==0.4.0
+typing_extensions==4.13.2
+urllib3==2.4.0
+watchdog==6.0.0
+wcmatch==10.0