Add observability settings to wrangler.jsonc (#101)

Add observability configuration with logs and traces settings.

Signed-off-by: Bradley Reynolds <bradley.reynolds@tailstory.dev>

Author: shenanigansd

wrangler.jsonc

@@ -7,6 +7,21 @@
   "assets": {
     "directory": "./dist"
   },
+  "observability": {
+    "enabled": false,
+    "head_sampling_rate": 1,
+    "logs": {
+      "enabled": true,
+      "head_sampling_rate": 1,
+      "persist": true,
+      "invocation_logs": true
+    },
+    "traces": {
+      "enabled": false,
+      "persist": true,
+      "head_sampling_rate": 1
+    }
+  },
   "routes": [
     {
       "pattern": "shenanigans.dog",