imprv: add installed-date to questionnaire answer

change scheme.

apps/app/src/features/questionnaire/interfaces/growi-info.ts

@@ -44,6 +44,7 @@ export interface IGrowiInfo {
   version: string
   appSiteUrl?: string
   appSiteUrlHashed: string
+  installedAt: Date
   type: GrowiServiceType
   currentUsersCount: number
   currentActiveUsersCount: number

apps/app/src/features/questionnaire/server/models/schema/growi-info.ts

@@ -8,6 +8,7 @@ export const growiInfoSchema = new Schema<IGrowiInfo>({
   version: { type: String, required: true },
   appSiteUrl: { type: String },
   appSiteUrlHashed: { type: String, required: true },
+  installedAt: { type: Date, required: true },
   type: { type: String, required: true, enum: Object.values(GrowiServiceType) },
   currentUsersCount: { type: Number, required: true },
   currentActiveUsersCount: { type: Number, required: true },