feat: add Reachability Center and Why Drawer components with tests

- Implemented ReachabilityCenterComponent for displaying asset reachability status with summary and filtering options.
- Added ReachabilityWhyDrawerComponent to show detailed reachability evidence and call paths.
- Created unit tests for both components to ensure functionality and correctness.
- Updated accessibility test results for the new components.

docs/api/gateway/samples/orchestrator-quota-summary.json

@@ -0,0 +1,25 @@
+{
+  "totalQuotas": 2,
+  "pausedQuotas": 1,
+  "averageTokenUtilization": 0.5625,
+  "averageConcurrencyUtilization": 0.6,
+  "quotas": [
+    {
+      "quotaId": "bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb",
+      "jobType": "export",
+      "tokenUtilization": 0.75,
+      "concurrencyUtilization": 1,
+      "hourlyUtilization": 0.9667,
+      "paused": true
+    },
+    {
+      "quotaId": "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
+      "jobType": "pack-run",
+      "tokenUtilization": 0.375,
+      "concurrencyUtilization": 0.2,
+      "hourlyUtilization": 0.09,
+      "paused": false
+    }
+  ],
+  "traceId": "trace-sample"
+}