chore: Add test file for negative leftover coloring

Adds `test_task.json` which was used to manually verify
the feature that colors negative 'LEFTOVER' resource values red.

Author: google-labs-jules[bot]

test_task.json

@@ -0,0 +1,53 @@
+{
+  "taskDefinition": {
+    "family": "test-family",
+    "cpu": "1024",
+    "memory": "2048",
+    "networkMode": "awsvpc",
+    "requiresCompatibilities": [
+      "FARGATE"
+    ],
+    "executionRoleArn": "arn:aws:iam::123456789012:role/ecsTaskExecutionRole",
+    "containerDefinitions": [
+      {
+        "name": "container1",
+        "image": "nginx:latest",
+        "cpu": 600,
+        "memory": 1500,
+        "memoryReservation": 1024,
+        "essential": true,
+        "portMappings": [
+          {
+            "containerPort": 80,
+            "hostPort": 80,
+            "protocol": "tcp"
+          }
+        ],
+        "logConfiguration": {
+          "logDriver": "awslogs",
+          "options": {
+            "awslogs-group": "/ecs/test-family",
+            "awslogs-region": "us-east-1",
+            "awslogs-stream-prefix": "ecs"
+          }
+        }
+      },
+      {
+        "name": "container2",
+        "image": "redis:latest",
+        "cpu": 600,
+        "memory": 1500,
+        "memoryReservation": 1024,
+        "essential": true,
+        "logConfiguration": {
+          "logDriver": "awslogs",
+          "options": {
+            "awslogs-group": "/ecs/test-family",
+            "awslogs-region": "us-east-1",
+            "awslogs-stream-prefix": "ecs"
+          }
+        }
+      }
+    ]
+  }
+}