feat: implement CLI for XBRL parsing and validation

- Parse command with optional stats flag
- Validate command with SEC EDGAR profile support
- Benchmark command for performance testing
- Colored output for better UX

examples/benchmark_single.rs

@@ -0,0 +1,34 @@
+use std::env;
+use std::fs;
+use std::time::Instant;
+use crabrl::Parser;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    if args.len() != 2 {
+        eprintln!("Usage: {} <xbrl_file>", args[0]);
+        std::process::exit(1);
+    }
+
+    let filename = &args[1];
+    let content = fs::read_to_string(filename)
+        .expect("Failed to read file");
+
+    let parser = Parser::new();
+    let start = Instant::now();
+    
+    match parser.parse(&content) {
+        Ok(document) => {
+            let elapsed = start.elapsed();
+            println!("Parsed in {:.3}ms: {} facts, {} contexts, {} units",
+                     elapsed.as_secs_f64() * 1000.0,
+                     document.facts.len(),
+                     document.contexts.len(),
+                     document.units.len());
+        }
+        Err(e) => {
+            eprintln!("Parse error: {}", e);
+            std::process::exit(1);
+        }
+    }
+}