add signup method

cmd/evening_detective_server/main.swagger.json

@@ -67,6 +67,42 @@
           "EveningDetectiveServer"
         ]
       }
+    },
+    "/api/signup": {
+      "post": {
+        "operationId": "EveningDetectiveServer_Signup",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/evening_detective_serverSignupRsp"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "name",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "email",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "EveningDetectiveServer"
+        ]
+      }
     }
   },
   "definitions": {
@@ -81,6 +117,14 @@
     "evening_detective_serverPingRsp": {
       "type": "object"
     },
+    "evening_detective_serverSignupRsp": {
+      "type": "object",
+      "properties": {
+        "error": {
+          "type": "string"
+        }
+      }
+    },
     "protobufAny": {
       "type": "object",
       "properties": {