feat: add option to play sound when timer ends

Also fix issue with starting application for the first time when no settings are present

Author: G07cha

src-tauri/Cargo.lock

@@ -22,6 +22,7 @@ tauri-plugin-autostart = { git = "https://github.com/tauri-apps/plugins-workspac
 ts-rs = "7.0.0"
 ticking-timer = { git = "https://github.com/g07cha/ticking-timer", branch = "main" }
 anyhow = "1.0.75"
+rodio = "0.17.3"
 
 [dev-dependencies]
 cargo-bump = "1.1.0"

src-tauri/Cargo.toml

@@ -1,3 +1,3 @@
 // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
 
-export interface SettingsPayload { work_duration_secs: number, relax_duration_secs: number, long_relax_duration_secs: number, toggle_timer_shortcut: string | null, }
+export interface SettingsPayload { work_duration_secs: number, relax_duration_secs: number, long_relax_duration_secs: number, toggle_timer_shortcut: string | null, should_play_sound: boolean | null, }