Add e2e test to CI

.github/workflows/e2e.yml

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+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
+
+name: End-to-End Tests
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  e2e-test:
+    name: E2E Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: 1.87
+          targets: wasm32-wasip2
+
+      - name: Install Spin
+        shell: bash
+        run: |
+            curl -fsSL https://spinframework.dev/downloads/install.sh | bash -s -- -v v3.6.0
+            mv spin /usr/local/bin/
+
+      - name: Install pluginify
+        shell: bash
+        run: spin plugins install --url https://github.com/itowlson/spin-pluginify/releases/download/canary/pluginify.json --yes
+
+      - name: Run E2E tests
+        run: ./test/e2e.sh

test/e2e.sh

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+#! /bin/bash
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+NC='\033[0m' # No Color
+
+# Create random temporary directory for logs
+LOG_DIR=$(mktemp -d)
+
+# Check if spin is available
+if ! command -v spin &> /dev/null; then
+    echo -e "${RED}Error: Spin is not installed${NC}"
+    echo "Please install Spin: https://developer.fermyon.com/spin/install"
+    exit 1
+fi
+echo -e "${GREEN}✓ Spin is available${NC}"
+
+# Build and install the plugin
+echo -e "\n${GREEN}Building and installing the command trigger plugin...${NC}"
+cargo build --release
+spin pluginify --install
+
+spin up --from examples/hello-world --quiet --log-dir "$LOG_DIR"
+
+# Assert that the contents of stdout is `Hello, world!`
+OUTPUT=$(cat "$LOG_DIR/hello-world_stdout.txt")
+if [[ "$OUTPUT" == "Hello, world!" ]]; then
+    echo -e "${GREEN}✓ Output is correct${NC}"
+else
+    echo -e "${RED}✗ Output is incorrect${NC}"
+    echo "Expected: Hello, world!"
+    echo "Got: $OUTPUT"
+    exit 1
+fi
+
+rm -rf "$LOG_DIR"