replace pkexec with gtk sudo (#9383)

* Fix https://github.com/rustdesk/rustdesk/issues/9286, replace pkexec
  with gtk sudo. Tested on gnome (ubuntu 22.04, debian 13), xfce (manjaro, suse), kde (kubuntu 23), lxqt (lubuntu 22), Cinnamon (mint 21.3), Mate (mint 21.2)
* Fix incorrect config of the main window opened by the tray, replace
  xdg-open with run_me, replace with dbus + run_me
* Fix `check_if_stop_service`, it causes the problem fixed in
  https://github.com/rustdesk/rustdesk/pull/8414, now revert that fix and fix itself.

Signed-off-by: 21pages <sunboeasy@gmail.com>

Cargo.lock

@@ -860,6 +860,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+
 [[package]]
 name = "chrono"
 version = "0.4.38"
@@ -3967,11 +3973,23 @@ checksum = "ab2156c4fce2f8df6c499cc1c763e4394b7482525bf2a9701c9d79d215f519e4"
 dependencies = [
  "bitflags 2.6.0",
  "cfg-if 1.0.0",
- "cfg_aliases",
+ "cfg_aliases 0.1.1",
  "libc",
  "memoffset 0.9.1",
 ]
 
+[[package]]
+name = "nix"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
+dependencies = [
+ "bitflags 2.6.0",
+ "cfg-if 1.0.0",
+ "cfg_aliases 0.2.1",
+ "libc",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -5494,6 +5512,7 @@ dependencies = [
  "flutter_rust_bridge",
  "fon",
  "fruitbasket",
+ "gtk",
  "hbb_common",
  "hex",
  "hound",
@@ -5508,6 +5527,7 @@ dependencies = [
  "libpulse-simple-binding",
  "mac_address",
  "magnum-opus",
+ "nix 0.29.0",
  "num_cpus",
  "objc",
  "objc_id",
@@ -5539,6 +5559,7 @@ dependencies = [
  "system_shutdown",
  "tao",
  "tauri-winrt-notification",
+ "termios",
  "totp-rs",
  "tray-icon",
  "url",