seperate into multiple source files

src/misc.rs

@@ -0,0 +1,13 @@
+use std::{fs, path::PathBuf};
+
+pub fn get_file_sha1(path: &PathBuf) -> String {
+    let mut sha1 = sha1_smol::Sha1::new();
+    sha1.update(&fs::read(path).unwrap());
+    sha1.digest().to_string()
+}
+
+pub fn stdin() -> String {
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input).unwrap();
+    input.trim().to_string()
+}