ksud: replace some utils with rust libraries (#142)

userspace/ksud/Cargo.toml

@@ -23,8 +23,13 @@ encoding = "0.2.33"
 retry = "2.0.0"
 humansize = "2.0.0"
 libc = "0.2"
+sys-mount = "2.0.1"
+android-properties = { version = "0.2.2", features = ["bionic-deprecated"] }
+extattr = "1.0.0"
+jwalk = "0.8.1"
+is_executable = "1.0.1"
 
 [profile.release]
 strip = true
 opt-level = "z"
-lto = true
+lto = true