feat(build): Add disable_comments option (#1127)

tests/disable_comments/tests/disable_comments.rs

@@ -0,0 +1,15 @@
+use std::{fs, path::PathBuf};
+
+#[test]
+fn test() {
+    let path = PathBuf::from(std::env::var("OUT_DIR").unwrap()).join("test.rs");
+    let s = fs::read_to_string(path).unwrap();
+    assert!(!s.contains("This comment will be removed."));
+    let mut count = 0_usize;
+    let mut index = 0_usize;
+    while let Some(found) = s[index..].find("This comment will not be removed.") {
+        index += found + 1;
+        count += 1;
+    }
+    assert_eq!(count, 2 + 3 + 3); // message: 2, client: 3, server: 3
+}