Add contributor schema

schemas/contributor.json

@@ -0,0 +1,75 @@
+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "id": "http://schema.kosmos.org/Contributor",
+  "properties": {
+    "@context": {
+      "type": "string",
+      "enum": "https://schema.kosmos.org/",
+      "default": "https://schema.kosmos.org/"
+    },
+    "@type": {
+      "type": "string",
+      "enum": "Contributor",
+      "default": "Contributor"
+    },
+    "kind": {
+      "type": "string",
+      "title": "Kind",
+      "description": "Type/category of contribution",
+      "enum": [
+        "person",
+        "organization",
+        "robot"
+      ]
+    },
+    "name": {
+      "type": "string",
+      "title": "Name",
+      "description": "Display name of the person, organisation, robot, or whatever entity might conribute in the future"
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "title": "URL",
+      "description": "A URL pointing to the contributor's website or profile page on the Web"
+    },
+    "accounts": {
+      "items": {
+        "properties": {
+          "site": {
+            "type": "string",
+            "title": "Site",
+            "description": "Site name or domain, e.g. 'github.com'"
+          },
+          "username": {
+            "type": "string",
+            "title": "Username",
+            "description": "Publicly visible nickname/handle of the user"
+          },
+          "uid": {
+            "type": "integer",
+            "title": "User ID",
+            "description": "A numeric account ID"
+          },
+          "url": {
+            "type": "string",
+            "format": "uri",
+            "title": "URL",
+            "description": "A URL pointing to the account's public profile"
+          }
+        },
+        "required": [
+          "site",
+          "username"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "kind",
+    "name"
+  ],
+  "type": "object"
+}