Added initial dummy platform files for passkeys.

Telegram/SourceFiles/platform/linux/webauthn_linux.cpp

@@ -0,0 +1,29 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+
+#include "platform/platform_webauthn.h"
+
+namespace Platform::WebAuthn {
+
+bool IsSupported() {
+	return false;
+}
+
+void RegisterKey(
+		const Data::Passkey::RegisterData &data,
+		Fn<void(RegisterResult result)> callback) {
+	callback({});
+}
+
+void Login(
+		const Data::Passkey::LoginData &data,
+		Fn<void(LoginResult result)> callback) {
+	callback({});
+}
+
+} // namespace Platform::WebAuthn

Telegram/SourceFiles/platform/mac/webauthn_mac.mm

@@ -0,0 +1,29 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+
+#include "platform/platform_webauthn.h"
+
+namespace Platform::WebAuthn {
+
+bool IsSupported() {
+	return false;
+}
+
+void RegisterKey(
+		const Data::Passkey::RegisterData &data,
+		Fn<void(RegisterResult result)> callback) {
+	callback({});
+}
+
+void Login(
+		const Data::Passkey::LoginData &data,
+		Fn<void(LoginResult result)> callback) {
+	callback({});
+}
+
+} // namespace Platform::WebAuthn

Telegram/SourceFiles/platform/platform_webauthn.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+
+#pragma once
+
+namespace Data::Passkey {
+struct RegisterData;
+struct LoginData;
+} // namespace Data::Passkey
+
+namespace Platform::WebAuthn {
+
+struct LoginResult {
+	QByteArray clientDataJSON;
+	QByteArray credentialId;
+	QByteArray authenticatorData;
+	QByteArray signature;
+	QByteArray userHandle;
+};
+
+struct RegisterResult {
+	QByteArray credentialId;
+	QByteArray attestationObject;
+	QByteArray clientDataJSON;
+	bool success = false;
+};
+
+[[nodiscard]] bool IsSupported();
+void RegisterKey(
+	const Data::Passkey::RegisterData &data,
+	Fn<void(RegisterResult result)> callback);
+void Login(
+	const Data::Passkey::LoginData &data,
+	Fn<void(LoginResult result)> callback);
+
+} // namespace Platform::WebAuthn

Telegram/SourceFiles/platform/win/webauthn_win.cpp

@@ -0,0 +1,29 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+
+#include "platform/platform_webauthn.h"
+
+namespace Platform::WebAuthn {
+
+bool IsSupported() {
+	return false;
+}
+
+void RegisterKey(
+		const Data::Passkey::RegisterData &data,
+		Fn<void(RegisterResult result)> callback) {
+	callback({});
+}
+
+void Login(
+		const Data::Passkey::LoginData &data,
+		Fn<void(LoginResult result)> callback) {
+	callback({});
+}
+
+} // namespace Platform::WebAuthn