chore: add cli example

examples/cli.rs

@@ -0,0 +1,29 @@
+use css_module_lexer::{collect_dependencies, Mode};
+
+fn main() {
+    let Some(path) = std::env::args().nth(1) else {
+        eprintln!("USAGE: cli <path>");
+        return;
+    };
+    let Ok(input) = std::fs::read_to_string(&path) else {
+        eprintln!("Failed to read file: {}", path);
+        return;
+    };
+    let (dependencies, warnings) = collect_dependencies(&input, Mode::Css);
+    if dependencies.is_empty() {
+        println!("No dependencies found");
+    } else {
+        println!("Dependencies:");
+        for dependency in dependencies {
+            println!("{:?}", dependency);
+        }
+    }
+    if warnings.is_empty() {
+        println!("No warnings found");
+    } else {
+        println!("Warnings:");
+        for warning in warnings {
+            println!("{:?}", warning);
+        }
+    }
+}