Add first version of Wagtail CMS listing (#860)

Co-authored-by: Damilola Oladele <[email protected]>

Author: thibaudcolas

src/site/headless-cms/wagtail.md

@@ -0,0 +1,61 @@
+---
+title: Wagtail
+homepage: https://wagtail.org/
+repo: wagtail/wagtail
+twitter: wagtailcms
+opensource: "Yes"
+typeofcms: "API Driven"
+supportedgenerators:
+  - All
+description: Wagtail is the leading open-source Python CMS. Based on Django, it supports both traditional and headless sites via REST and GraphQL APIs.
+images:
+  - path: /img/cms/wagtail-page-editor.png
+---
+
+Wagtail is an open-source CMS built on the Django web framework, focused on flexibility and user experience.
+
+Its major features are:
+
+- **StreamField**. An intuitive block-based page editor, so authors control how content is displayed and how data is organised.
+- **Page tree**. A tree structure for the site’s pages, that makes content easy to find and organise.
+- **Customizable page types**. Using Django models to easily create and extend a custom architecture.
+- **Snippets**. Reusable components that editors can use over and over again.
+- **Advanced image management**. Image library organisation, custom cropping tools, and advanced image optimisations.
+
+Built upon Django, Wagtail projects can leverage an ecosystem of thousands of [Django packages](https://djangopackages.org/), as well as Wagtail-specific plugins.
+
+## Headless features
+
+Since Wagtail is built on the Django framework, you can integrate all Django features and third-party plugins. For example, if you don't want to use Wagtail's built-in REST API, you can build your own using [Django REST framework](https://www.django-rest-framework.org).
+
+View the official Wagtail [Are we headless yet?](https://areweheadlessyet.wagtail.org/) website for an overview of Wagtail’s features for headless projects, such as:
+
+- The [REST API](https://areweheadlessyet.wagtail.org/rest-api) to access site contents.
+- Available [GraphQL packages](https://areweheadlessyet.wagtail.org/graphql).
+- How to process [rich text](https://areweheadlessyet.wagtail.org/rich-text) based upon the needs of the site generator.
+- And more details about common requirements, specific site generators, and hosting platforms.
+
+## GraphQL usage
+
+By using [wagtail-grapple](https://github.com/torchbox/wagtail-grapple), you can build GraphQL endpoints on a model-by-model basis as quickly as possible with a simple configuration. The library provides support for the following:
+
+- Annotation-based schema generation
+- Built-in support for Page, Snippets, Image, Documents, Media, Settings, Redirects models.
+- Search and pagination
+- Jamstack website preview functionality built with GraphQL subscriptions
+
+## Jamstack sites built with Wagtail
+
+Currently, there are governments, nonprofits, and publications using Wagtail on Jamstack. Here are prominent examples:
+
+- [NASA Jet Propulsion Laboratory](https://www.jpl.nasa.gov/) – Nuxt
+- [Hong Kong M+ Museum](https://www.mplus.org.hk/en/) – Nuxt
+- [Visit Sweden](https://visitsweden.com/) – Next.js
+
+## Popular Resources
+
+- [Are we headless yet?](https://areweheadlessyet.wagtail.org/) – Overview of all the ins and outs of Wagtail on the Jamstack.
+- [wagtail.org](https://wagtail.org/) – Official website.
+- [guide.wagtail.org](https://guide.wagtail.org/) – User documentation.
+- [docs.wagtail.org](https://docs.wagtail.org/) – Developer documentation.
+- [wagtail.org/roadmap](https://wagtail.org/roadmap) – Public roadmap.