Supressed clippy errors and add some rust docs

Cargo.lock

@@ -22,9 +22,9 @@ checksum = "8f68f53c83ab957f72c32642f3868eec03eb974d1fb82e453128456482613d36"
 
 [[package]]
 name = "cc"
-version = "1.2.15"
+version = "1.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c736e259eea577f443d5c86c304f9f4ae0295c43f3ba05c21f1d66b5f06001af"
+checksum = "be714c154be609ec7f5dad223a33bf1482fff90472de28f7362806e6d4832b8c"
 dependencies = [
  "shlex",
 ]
@@ -75,6 +75,7 @@ name = "foundry_os"
 version = "0.1.0"
 dependencies = [
  "cc",
+ "libm",
  "limine",
  "pc-keyboard",
  "pic8259",