Merged PR 70: API I/F実装（メール認証）

## 概要
[Task1599: API I/F実装（メール認証）](https://paruru.nds-tyo.co.jp:8443/tfs/ReciproCollection/fa4924a4-d079-4fab-9fb5-a9a11eb205f0/_workitems/edit/1599)

- エンドユーザーのメール認証を行うAPIのI/Fを作成

## レビューポイント
- pathは問題なさそうか
- Request/Responseは本質的に同一だと思われるため、管理者の認証と共通としたが問題ないか？

## 動作確認状況
- openapi.jsonの生成を確認

dictation_server/src/api/odms/openapi.json

@@ -172,6 +172,48 @@
         "tags": ["users"]
       }
     },
+    "/users/confirm/initpassword": {
+      "post": {
+        "operationId": "confirmUserAndInitPassword",
+        "summary": "",
+        "parameters": [],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": { "$ref": "#/components/schemas/ConfirmRequest" }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "成功時のレスポンス",
+            "content": {
+              "application/json": {
+                "schema": { "$ref": "#/components/schemas/ConfirmResponse" }
+              }
+            }
+          },
+          "400": {
+            "description": "不正なトークン",
+            "content": {
+              "application/json": {
+                "schema": { "$ref": "#/components/schemas/ErrorResponse" }
+              }
+            }
+          },
+          "500": {
+            "description": "想定外のサーバーエラー",
+            "content": {
+              "application/json": {
+                "schema": { "$ref": "#/components/schemas/ErrorResponse" }
+              }
+            }
+          }
+        },
+        "tags": ["users"]
+      }
+    },
     "/users": {
       "get": {
         "operationId": "getUsers",

dictation_server/src/features/users/users.controller.ts

@@ -43,6 +43,30 @@ export class UsersController {
     return {};
   }
 
+  @ApiResponse({
+    status: HttpStatus.OK,
+    type: ConfirmResponse,
+    description: '成功時のレスポンス',
+  })
+  @ApiResponse({
+    status: HttpStatus.BAD_REQUEST,
+    description: '不正なトークン',
+    type: ErrorResponse,
+  })
+  @ApiResponse({
+    status: HttpStatus.INTERNAL_SERVER_ERROR,
+    description: '想定外のサーバーエラー',
+    type: ErrorResponse,
+  })
+  @ApiOperation({ operationId: 'confirmUserAndInitPassword' })
+  @Post('confirm/initpassword')
+  async confirmUserAndInitPassword(
+    @Body() body: ConfirmRequest,
+  ): Promise<ConfirmResponse> {
+    console.log(body);
+    return {};
+  }
+
   @ApiResponse({
     status: HttpStatus.OK,
     type: GetUsersResponse,