Ingore shebang at top of file (#11927)

Signed-off-by: Chojan Shang <psiace@apache.org>

Author: PsiACE

datafusion-cli/src/exec.rs

@@ -70,6 +70,9 @@ pub async fn exec_from_lines(
 
     for line in reader.lines() {
         match line {
+            Ok(line) if line.starts_with("#!") => {
+                continue;
+            }
             Ok(line) if line.starts_with("--") => {
                 continue;
             }