feat: initial miq.stats-plugin implementation

Operating-numbers view plugin (MIQ-1734): per-agent load, in-flight
per project, pending-decision age, 7-day throughput, and budget tile.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "lib": ["ES2022", "DOM"],
+    "jsx": "react-jsx",
+    "strict": true,
+    "skipLibCheck": true,
+    "noEmit": true
+  },
+  "include": ["src"]
+}