Add media-range format to registry (OAI#3238)

Author: jdesrosiers

registries/_format/media-range.md

@@ -0,0 +1,30 @@
+---
+owner: jdesrosiers
+issue:
+description: A media type as defined by the `media-range` ABNF production in RFC9110.
+base_type: string
+layout: default
+source_label: OpenAPI
+source: https://www.rfc-editor.org/rfc/rfc9110#field.accept
+---
+
+# <a href="..">{{ page.collection }}</a>
+
+## {{ page.slug }} - {{ page.description }}
+
+Base type: `{{ page.base_type }}`.
+
+The `{{page.slug}}` format is a media type as defined by the `media-range` ABNF
+production in [RFC9110](https://www.rfc-editor.org/rfc/rfc9110).
+
+{% if page.issue %}
+### GitHub Issue
+
+* [#{{ page.issue }}](https://github.com/OAI/OpenAPI-Specification/issues/{{ page.issue }})
+{% endif %}
+
+{% if page.remarks %}
+### Remarks
+
+{{ page.remarks }}
+{% endif %}