Merge branch '90-feature-method-to-get-the-adjacency-matrix' into 'dev'

Added `get_adj_matrix()` to `CtbnNetwork`

reCTBN/src/process/ctbn.rs

@@ -138,6 +138,10 @@ impl CtbnNetwork {
 
         return array_state;
     }
+    /// Get the Adjacency Matrix.
+    pub fn get_adj_matrix(&self) -> Option<&Array2<u16>> {
+        self.adj_matrix.as_ref()
+    }
 }
 
 impl process::NetworkProcess for CtbnNetwork {