Introduce a sudo daemon as replacement for suid/escalated

This daemon will request the password of the user, check that the user
is in the sudo group and if everything checks out elevate the sudo
process to root after which the sudo process can exec the target process.

Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "ansi_term"
@@ -150,9 +150,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.159"
+version = "0.2.171"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "561d97a539a36e26a9a5fad1ea11a3039a67714694aaa379433e580854bc3dc5"
+checksum = "c19937216e9d3aa9956d9bb8dfc0b0c8beb6058fc4f7a4dc4d850edf86a237d6"
 
 [[package]]
 name = "libredox"
@@ -211,6 +211,16 @@ dependencies = [
  "libredox",
 ]
 
+[[package]]
+name = "redox-scheme"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a96b9cfb034251dfb0aaa66a67059a7f0ea344039904d1d70cd36266af9c8a2f"
+dependencies = [
+ "libredox",
+ "redox_syscall",
+]
+
 [[package]]
 name = "redox_event"
 version = "0.4.1"
@@ -236,9 +246,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.7"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b6dfecf2c74bce2466cabf93f6664d6998a69eb21e39f4207930065b27b771f"
+checksum = "d2f103c6d277498fbceb16e84d317e2a400f160f46904d5f5410848c829511a3"
 dependencies = [
  "bitflags 2.6.0",
 ]
@@ -382,11 +392,14 @@ version = "0.1.0"
 dependencies = [
  "clap",
  "extra",
+ "libc",
  "libredox",
  "orbclient",
  "redox-daemon",
+ "redox-scheme",
  "redox_event",
  "redox_liner",
+ "redox_syscall",
  "redox_termios",
  "redox_users",
  "termion",