chore: 添加设计资料和示例工程

sample/server/etc/sample_dev.yaml

@@ -0,0 +1,26 @@
+Service: sample
+Port: 12426
+
+Databases:
+  Driver: postgres
+  Source:
+    - host=127.0.0.1 user=postgres password=change-me dbname=sample_dev port=5432 sslmode=disable TimeZone=Asia/Shanghai
+
+# Redis cache example. Replace the password and host before using outside local development.
+Cache: redis://default:change-me@127.0.0.1:6379/0
+
+# Enable microservice mode when this sample is deployed behind the service mesh.
+OnMicroService: false
+
+# Shared secret for microservice calls. Use a random value in real environments.
+SecretKey: change-me-to-a-random-string
+
+# Rpc:
+#   fts:
+#     Endpoint: https://api-v2.traingo.cn/fts/v2
+#     SecretKey: change-me-to-a-random-string
+
+# Tracing and performance monitoring example.
+# APM:
+#   Platform: elasticAPM
+#   Endpoint: http://127.0.0.1:14268/api/traces