Massive refactor of led control

- Write brightness to kernel LED class path

Closes #63, #53

Cargo.lock

@@ -33,7 +33,7 @@ dependencies = [
 
 [[package]]
 name = "asusctl"
-version = "3.1.3"
+version = "3.1.4"
 dependencies = [
  "daemon",
  "gumdrop",
@@ -196,7 +196,7 @@ dependencies = [
 
 [[package]]
 name = "daemon"
-version = "3.1.7"
+version = "3.2.0"
 dependencies = [
  "env_logger",
  "intel-pstate",
@@ -504,9 +504,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.89"
+version = "0.2.90"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "538c092e5586f4cdd7dd8078c4a79220e3e168880218124dcbce860f0ea938c6"
+checksum = "ba4aede83fc3617411dc6993bc8c70919750c1c257c6ca6a502aed6e0e2394ae"
 
 [[package]]
 name = "libudev-sys"
@@ -908,7 +908,7 @@ dependencies = [
 
 [[package]]
 name = "rog_types"
-version = "3.0.0"
+version = "3.1.0"
 dependencies = [
  "gumdrop",
  "rog_fan_curve",