refactor(router): move fp_utils module to common_utils crate (#391)

Co-authored-by: Arun Raj M <jarnura47@gmail.com>
Co-authored-by: Nishant Joshi <nishant.joshi@juspay.in>

crates/common_utils/src/lib.rs

@@ -7,6 +7,7 @@ pub mod crypto;
 pub mod custom_serde;
 pub mod errors;
 pub mod ext_traits;
+pub mod fp_utils;
 pub mod pii;
 pub mod validation;