Add block fees vs subsidy bar chart

backend/src/api/mining/mining.ts

@@ -50,6 +50,13 @@ class Mining {
     );
   }
 
+  /**
+   * Get historical (not averaged) block total fee
+   */
+  public async $getHistoricalExactBlockFees(height: string | null = null): Promise<any> {
+    return await BlocksRepository.$getHistoricalExactBlockFees(height);
+  }
+
   /**
    * Get historical block rewards
    */