Add e2e-config.json and run-e2e.sh for local E2E testing

Per-SDK config and convenience script for the generic test runner
in sdk-e2e-tests. Run ./e2e-cli/run-e2e.sh to build and test locally.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: MichaelGHSeg

e2e-cli/e2e-config.json

@@ -0,0 +1,7 @@
+{
+  "sdk": "java",
+  "test_suites": "basic",
+  "auto_settings": false,
+  "patch": null,
+  "env": {}
+}

e2e-cli/run-e2e.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# Run E2E tests for analytics-java
+#
+# Prerequisites: Java 11+, Maven, Node.js 18+
+#
+# Usage:
+#   ./run-e2e.sh [extra args passed to run-tests.sh]
+#
+# Override sdk-e2e-tests location:
+#   E2E_TESTS_DIR=../my-e2e-tests ./run-e2e.sh
+#
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SDK_ROOT="$SCRIPT_DIR/.."
+E2E_DIR="${E2E_TESTS_DIR:-$SDK_ROOT/../sdk-e2e-tests}"
+
+echo "=== Building analytics-java e2e-cli ==="
+
+# Build SDK and e2e-cli
+cd "$SDK_ROOT"
+mvn package -pl e2e-cli -am -DskipTests
+
+# Find the built jar
+CLI_JAR=$(find "$SDK_ROOT/e2e-cli/target" -name "e2e-cli-*-jar-with-dependencies.jar" | head -1)
+if [[ -z "$CLI_JAR" ]]; then
+    echo "Error: Could not find e2e-cli jar"
+    exit 1
+fi
+echo "Found jar: $CLI_JAR"
+
+echo ""
+
+# Run tests
+cd "$E2E_DIR"
+./scripts/run-tests.sh \
+    --sdk-dir "$SCRIPT_DIR" \
+    --cli "java -jar $CLI_JAR" \
+    "$@"