Rename unified_qr module to unified

Rename the source file for the Unified QR payment logic from
unified_qr.rs to unified.rs. This change is made in preparation
for expanding the module's scope beyond just QR code payment
processing.

Author: chuksys

src/payment/mod.rs

@@ -13,7 +13,7 @@ mod bolt12;
 mod onchain;
 mod spontaneous;
 pub(crate) mod store;
-mod unified_qr;
+mod unified;
 
 pub use bolt11::Bolt11Payment;
 pub use bolt12::Bolt12Payment;
@@ -22,4 +22,4 @@ pub use spontaneous::SpontaneousPayment;
 pub use store::{
 	ConfirmationStatus, LSPFeeLimits, PaymentDetails, PaymentDirection, PaymentKind, PaymentStatus,
 };
-pub use unified_qr::{QrPaymentResult, UnifiedQrPayment};
+pub use unified::{QrPaymentResult, UnifiedQrPayment};

src/payment/unified_qr.rs src/payment/unified.rssrc/payment/unified_qr.rs renamed to src/payment/unified.rs

@@ -313,7 +313,7 @@ mod tests {
 	use bitcoin::{Address, Network};
 
 	use super::*;
-	use crate::payment::unified_qr::Extras;
+	use crate::payment::unified::Extras;
 
 	#[test]
 	fn parse_uri() {