feat: add routing fee estimation

Add estimate_routing_fees methods to Bolt11Payment for calculating Lightning routing fees

- estimate_routing_fees(): Calculate fees for regular invoices
- estimate_routing_fees_using_amount(): Calculate fees for zero-amount invoices

Author: coreyphillips

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ldk-node"
-version = "0.6.2-rc.1"
+version = "0.6.2-rc.2"
 authors = ["Elias Rohrer <[email protected]>"]
 homepage = "https://lightningdevkit.org/"
 license = "MIT OR Apache-2.0"
@@ -83,7 +83,7 @@ esplora-client = { version = "0.12", default-features = false, features = ["toki
 # `lightning-transaction-sync` APIs. We should drop it as part of the upgrade
 # to LDK 0.2.
 esplora-client_0_11 = { package = "esplora-client", version = "0.11", default-features = false, features = ["tokio", "async-https-rustls"] }
-electrum-client = { version = "0.24.0", default-features = true }
+electrum-client = { version = "0.23.1", default-features = true }
 libc = "0.2"
 uniffi = { version = "0.27.3", features = ["build"], optional = true }
 serde = { version = "1.0.210", default-features = false, features = ["std", "derive"] }

Package.swift

@@ -3,8 +3,8 @@
 
 import PackageDescription
 
-let tag = "v0.6.2-rc.1"
-let checksum = "9aeeb548ddf2b3699fcb07b3bbb99d691d4361a45f53a2eee473fcaacc7f1db9"
+let tag = "v0.6.2-rc.2"
+let checksum = "b5c68aaed0ec282d960a76db3703dcc13b6a51ec861122c90b614d112727fd90"
 let url = "https://github.com/synonymdev/ldk-node/releases/download/\(tag)/LDKNodeFFI.xcframework.zip"
 
 let package = Package(