add OAuth scope status contract

contracts/v1/twitch-oauth-status-response.json

@@ -0,0 +1,16 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://trixie.reaperofveriod.nl/contracts/v1/twitch-oauth-status-response.json",
+  "title": "Twitch OAuth scope status response",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["identity", "connected", "required_scopes", "granted_scopes", "missing_scopes", "reauthorization_required"],
+  "properties": {
+    "identity": { "enum": ["streamer", "bot", "moderator"] },
+    "connected": { "type": "boolean" },
+    "required_scopes": { "type": "array", "items": { "type": "string" }, "uniqueItems": true },
+    "granted_scopes": { "type": "array", "items": { "type": "string" }, "uniqueItems": true },
+    "missing_scopes": { "type": "array", "items": { "type": "string" }, "uniqueItems": true },
+    "reauthorization_required": { "type": "boolean" }
+  }
+}

fixtures/v1/twitch-oauth-status.response.json

@@ -0,0 +1,8 @@
+{
+  "identity": "streamer",
+  "connected": false,
+  "required_scopes": ["user:read:chat"],
+  "granted_scopes": [],
+  "missing_scopes": ["user:read:chat"],
+  "reauthorization_required": true
+}