enhance: サーバーのお問い合わせ先URLを設定できるように

packages/backend/src/server/api/endpoints/admin/meta.ts

@@ -427,6 +427,10 @@ export const meta = {
 				type: 'string',
 				optional: false, nullable: true,
 			},
+			inquiryUrl: {
+				type: 'string',
+				optional: false, nullable: true,
+			},
 			repositoryUrl: {
 				type: 'string',
 				optional: false, nullable: true,
@@ -513,6 +517,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				feedbackUrl: instance.feedbackUrl,
 				impressumUrl: instance.impressumUrl,
 				privacyPolicyUrl: instance.privacyPolicyUrl,
+				inquiryUrl: instance.inquiryUrl,
 				disableRegistration: instance.disableRegistration,
 				emailRequiredForSignup: instance.emailRequiredForSignup,
 				enableHcaptcha: instance.enableHcaptcha,