fix(linux): taskbar compile error on aarch64 (#884)

* fix(linux): taskbar compile error on aarch64

fixes #883

Note that i couldn't actually test the progress bar feature but at least it compiles now.

* Create fix-linux-arm64.md

* Update fix-linux-arm64.md

.changes/fix-linux-arm64.md

@@ -0,0 +1,5 @@
+---
+tao: 'patch:bug'
+---
+
+Fixed compile errors for Linux Arm64 targets.

src/platform_impl/linux/taskbar.rs

@@ -1,12 +1,12 @@
-use std::ffi::CString;
+use std::ffi::{c_char, CString};
 
 use dlopen2::wrapper::{Container, WrapperApi};
 
 use crate::window::{ProgressBarState, ProgressState};
 
 #[derive(WrapperApi)]
 struct UnityLib {
-  unity_launcher_entry_get_for_desktop_id: unsafe extern "C" fn(id: *const i8) -> *const isize,
+  unity_launcher_entry_get_for_desktop_id: unsafe extern "C" fn(id: *const c_char) -> *const isize,
   unity_inspector_get_default: unsafe extern "C" fn() -> *const isize,
   unity_inspector_get_unity_running: unsafe extern "C" fn(inspector: *const isize) -> i32,
   unity_launcher_entry_set_progress: unsafe extern "C" fn(entry: *const isize, value: f64) -> i32,