sim-lib: add graph implementation of SimNetwork trait

Add an implementation of our SimNetwork trait that will do the heavy
lifting of propagating htlcs through a simulated network.

Author: carlaKC

sim-lib/src/lib.rs

@@ -86,7 +86,7 @@ impl std::fmt::Display for NodeId {
 }
 
 /// Represents a short channel ID, expressed as a struct so that we can implement display for the trait.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash, Copy)]
 pub struct ShortChannelID(u64);
 
 /// Utility function to easily convert from u64 to `ShortChannelID`
@@ -165,6 +165,8 @@ pub enum SimulationError {
     FileError,
     #[error("{0}")]
     RandomActivityError(RandomActivityError),
+    #[error("Simulated Network Error: {0}")]
+    SimulatedNetworkError(String),
 }
 
 #[derive(Debug, Error)]