Add schemas package

docs/manifest.json

@@ -1775,6 +1775,12 @@
 		"markdown_source": "../packages/rich-text/README.md",
 		"parent": "packages"
 	},
+	{
+		"title": "@wordpress/schemas",
+		"slug": "packages-schemas",
+		"markdown_source": "../packages/schemas/README.md",
+		"parent": "packages"
+	},
 	{
 		"title": "@wordpress/scripts",
 		"slug": "packages-scripts",

packages/schemas/.npmrc

@@ -0,0 +1 @@
+package-lock=false

packages/schemas/CHANGELOG.md

@@ -0,0 +1,5 @@
+<!-- Learn how to maintain this file at https://github.com/WordPress/gutenberg/tree/HEAD/packages#maintaining-changelogs. -->
+
+## Unreleased
+
+Initial release.

packages/schemas/README.md

@@ -0,0 +1,34 @@
+# Schemas
+
+The collection of schemas used in WordPress, including the `theme.json` schema, and `block.json` schemas.
+
+## Installation
+
+Install the module
+
+```shell
+$ npm install @wordpress/schemas --save-dev
+```
+
+## Usage
+
+JSON schemas are used by code editors to offer tooltips, autocomplete, and validation. To use in your JSON file, add the `$schema` property to the top of the file with the value of the schema URL.
+
+For example, in your `block.json` file you would add:
+
+```json
+{
+	"$schema": "https://raw.githubusercontent.com/WordPress/gutenberg/trunk/packages/schemas/json/block.json"
+}
+```
+
+## SchemaStore.org
+
+[SchemaStore.org](https://schemastore.org) is an open collection of schemas, including the WordPress `theme.json` and `block.json` schemas. Any changes to schemas in this package should be mirror there.
+
+To update on SchemaStore, create a PR at their repository [SchemaStore/schemastore](https://github.com/SchemaStore/schemastore/). The files can be found in their reposiory at:
+
+-   block.json: `src/schemas/json/block.json`
+-   theme.json: `src/schemas/json/theme-v1.json`
+
+<br/><br/><p align="center"><img src="https://s.w.org/style/images/codeispoetry.png?1" alt="Code is Poetry." /></p>