add Revel Digital gadget definition schema (SchemaStore#4835)

* add Revel Digital gadget definition schema

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: mtinnes

src/api/json/catalog.json

@@ -8525,6 +8525,12 @@
       ],
       "url": "https://raw.githubusercontent.com/ShaitanLyss/these/main/hecate/hecate-json-schema.json"
     },
+    {
+      "name": "Revel Digital Gadget Definition File",
+      "description": "Revel Digital gadget definition file. See https://developer.reveldigital.com/gadgets for more information",
+      "fileMatch": ["gadget.yml", "gadget.yaml"],
+      "url": "https://www.schemastore.org/gadget-yaml.json"
+    },
     {
       "name": "Jujutsu (jj) VCS config",
       "description": "Jujutsu (jj) configuration file",

src/schemas/json/gadget-yaml.json

@@ -0,0 +1,220 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://www.schemastore.org/gadget-yaml.json",
+  "title": "gadget.yaml",
+  "description": "Schema for Revel Digital gadget.yaml files. See https://developer.reveldigital.com/gadgets for more information.",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "title": {
+      "type": "string"
+    },
+    "title_url": {
+      "type": ["string", "null"],
+      "format": "uri"
+    },
+    "description": {
+      "type": "string"
+    },
+    "author": {
+      "type": "string"
+    },
+    "background": {
+      "type": "string"
+    },
+    "requirements": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    },
+    "locales": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/Locale"
+      }
+    },
+    "prefs": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/Pref"
+      }
+    }
+  },
+  "required": [
+    "author",
+    "background",
+    "description",
+    "locales",
+    "prefs",
+    "requirements",
+    "title",
+    "title_url"
+  ],
+  "definitions": {
+    "Locale": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "messages": {
+          "type": "string",
+          "format": "uri"
+        },
+        "lang": {
+          "type": "string"
+        }
+      },
+      "required": ["messages"],
+      "title": "Locale"
+    },
+    "Pref": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "display_name": {
+          "type": "string"
+        },
+        "datatype": {
+          "type": "string"
+        },
+        "default_value": {
+          "$ref": "#/definitions/DefaultValue"
+        },
+        "required": {
+          "type": "boolean"
+        },
+        "options": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Option"
+          }
+        },
+        "depends": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Depend"
+          }
+        },
+        "multiple": {
+          "type": "boolean"
+        },
+        "multiline": {
+          "type": "boolean"
+        }
+      },
+      "required": [
+        "datatype",
+        "default_value",
+        "display_name",
+        "name",
+        "required"
+      ],
+      "title": "Pref"
+    },
+    "Depend": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "any_of": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/AnyOf"
+          }
+        },
+        "all_of": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/AllOf"
+          }
+        },
+        "none_of": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/NoneOf"
+          }
+        }
+      },
+      "required": ["name"],
+      "title": "Depend"
+    },
+    "AnyOf": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "values": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "required": ["values"],
+      "title": "AnyOf"
+    },
+    "AllOf": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "values": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "required": ["values"],
+      "title": "AllOf"
+    },
+    "NoneOf": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "values": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "required": ["values"],
+      "title": "NoneOf"
+    },
+    "Option": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "display_value": {
+          "type": "string"
+        },
+        "value": {
+          "type": ["string", "null"]
+        }
+      },
+      "required": ["display_value"],
+      "title": "Option"
+    },
+    "DefaultValue": {
+      "anyOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        },
+        {
+          "type": "string"
+        }
+      ],
+      "title": "DefaultValue"
+    }
+  }
+}