generate schema and validate example for new standard webhooks plugin (…

…#50)

examples/standard-webhooks/_3.8.x.yaml

@@ -0,0 +1,3 @@
+name: standard-webhooks
+config:
+  secret_v1: example-secret

schemas/standard-webhooks/3.8.x.json

@@ -0,0 +1,63 @@
+{
+  "fields": [
+    {
+      "consumer": {
+        "reference": "consumers",
+        "type": "foreign",
+        "description": "Custom type for representing a foreign key with a null value allowed.",
+        "eq": null
+      }
+    },
+    {
+      "protocols": {
+        "required": true,
+        "elements": {
+          "one_of": [
+            "grpc",
+            "grpcs",
+            "http",
+            "https"
+          ],
+          "type": "string"
+        },
+        "type": "set",
+        "default": [
+          "grpc",
+          "grpcs",
+          "http",
+          "https"
+        ],
+        "description": "A set of strings representing HTTP protocols."
+      }
+    },
+    {
+      "config": {
+        "type": "record",
+        "fields": [
+          {
+            "secret_v1": {
+              "required": true,
+              "referenceable": true,
+              "description": "Webhook secret",
+              "type": "string",
+              "encrypted": true
+            }
+          },
+          {
+            "tolerance_second": {
+              "required": true,
+              "gt": -1,
+              "type": "integer",
+              "default": 300,
+              "description": "Tolerance of the webhook timestamp in seconds. If the webhook timestamp is older than this number of seconds, it will be rejected with a '400' response."
+            }
+          }
+        ],
+        "required": true
+      }
+    }
+  ],
+  "entity_checks": [
+
+  ]
+}