feat!: add telegram auth and async refactor

- Removed "/schedule/update-download-url" endpoint, this mechanism was replaced by Yandex Cloud FaaS. Ура :)
- Improved schedule caching mechanism.
- Added Telegram WebApp authentication support.
- Reworked endpoints responses and errors mechanism.
- Refactored application state management.
- Make synchronous database operations, middlewares and extractors to asynchronous.
- Made user password field optional to support multiple auth methods.
- Renamed users table column "version" to "android_version" and made it nullable.

src/state/env/mod.rs

@@ -0,0 +1,17 @@
+pub mod schedule;
+pub mod telegram;
+pub mod vk_id;
+pub mod yandex_cloud;
+
+pub use self::schedule::ScheduleEnvData;
+pub use self::telegram::TelegramEnvData;
+pub use self::vk_id::VkIdEnvData;
+pub use self::yandex_cloud::YandexCloudEnvData;
+
+#[derive(Default)]
+pub struct AppEnv {
+    pub schedule: ScheduleEnvData,
+    pub telegram: TelegramEnvData,
+    pub vk_id: VkIdEnvData,
+    pub yandex_cloud: YandexCloudEnvData,
+}