WIP: Add bdk_core coin select

Author: evanlinjin

src/bdk_core/coin_select/bnb.rs

@@ -173,6 +173,7 @@ impl<'c, 'f, S: Ord + Copy + Display> Iterator for BnbIter<'c, 'f, S> {
     }
 }
 
+#[derive(Debug, Clone, Copy)]
 /// Determines how we should limit rounds of branch and bound.
 pub enum BnbLimit {
     /// Limit by round count.

src/error.rs

@@ -240,3 +240,9 @@ impl From<crate::blockchain::esplora::EsploraError> for Error {
         Error::Esplora(Box::new(other))
     }
 }
+
+impl From<crate::bdk_core::SelectionFailure> for Error {
+    fn from(f: crate::bdk_core::SelectionFailure) -> Self {
+        Error::Generic(format!("bdk_core: {}", f))
+    }
+}