feat: add native fnOS PostgreSQL shared service

fnos-postgresql/wizard/install

@@ -0,0 +1,47 @@
+[
+  {
+    "stepTitle": "设置 PostgreSQL 服务管理凭据",
+    "items": [
+      {
+        "type": "tips",
+        "helpText": "管理密码用于登录数据库面板；接入令牌用于其他 fnOS 应用首次申请独立数据库。两者均不会设置默认值。"
+      },
+      {
+        "type": "password",
+        "field": "wizard_postgres_admin_password",
+        "label": "管理面板密码",
+        "rules": [
+          { "required": true, "message": "请输入管理面板密码" },
+          { "min": 12, "message": "管理密码至少需要 12 个字符" },
+          { "max": 256, "message": "管理密码不能超过 256 个字符" }
+        ]
+      },
+      {
+        "type": "password",
+        "field": "wizard_postgres_admin_password_confirm",
+        "label": "再次输入管理密码",
+        "rules": [
+          { "required": true, "message": "请再次输入管理密码" }
+        ]
+      },
+      {
+        "type": "password",
+        "field": "wizard_postgres_enrollment_token",
+        "label": "应用接入令牌",
+        "rules": [
+          { "required": true, "message": "请输入应用接入令牌" },
+          { "min": 20, "message": "接入令牌至少需要 20 个字符" },
+          { "max": 256, "message": "接入令牌不能超过 256 个字符" }
+        ]
+      },
+      {
+        "type": "password",
+        "field": "wizard_postgres_enrollment_token_confirm",
+        "label": "再次输入接入令牌",
+        "rules": [
+          { "required": true, "message": "请再次输入接入令牌" }
+        ]
+      }
+    ]
+  }
+]

fnos-postgresql/wizard/upgrade

@@ -0,0 +1,11 @@
+[
+  {
+    "stepTitle": "升级 PostgreSQL 共享服务",
+    "items": [
+      {
+        "type": "tips",
+        "helpText": "升级期间所有依赖应用会暂时失去数据库连接。当前版本仅执行 PostgreSQL 15 同主版本升级，并保留数据、凭据、审计记录和备份。"
+      }
+    ]
+  }
+]