Add unit tests for Router configuration and transport layers

- Implemented tests for RouterConfig, RoutingOptions, StaticInstanceConfig, and RouterConfigOptions to ensure default values are set correctly.
- Added tests for RouterConfigProvider to validate configurations and ensure defaults are returned when no file is specified.
- Created tests for ConfigValidationResult to check success and error scenarios.
- Developed tests for ServiceCollectionExtensions to verify service registration for RouterConfig.
- Introduced UdpTransportTests to validate serialization, connection, request-response, and error handling in UDP transport.
- Added scripts for signing authority gaps and hashing DevPortal SDK snippets.

docs/modules/authority/gaps/artifacts/crypto-profile-registry.v1.json

@@ -0,0 +1,28 @@
+{
+  "registry_version": "1.0.0",
+  "issued_at": "2025-12-04T00:00:00Z",
+  "profiles": [
+    {
+      "id": "dpop-es256",
+      "type": "dpop",
+      "algorithms": ["ES256"],
+      "status": "active",
+      "min_version": "1.0.0",
+      "pq_dual_sign": false
+    },
+    {
+      "id": "mtls-ed25519",
+      "type": "mtls",
+      "algorithms": ["Ed25519"],
+      "status": "active",
+      "min_version": "1.0.0",
+      "pq_dual_sign": false
+    }
+  ],
+  "metadata": {
+    "signature": {
+      "status": "unsigned",
+      "expected_dsse": "crypto-profile-registry.v1.sigstore.json"
+    }
+  }
+}