Add check for annotations that span multiple lines

Author: rachmari

server.rb

@@ -174,11 +174,14 @@ def initiate_check_run
               path: file_path,
               start_line: start_line,
               end_line: end_line,
-              start_column: start_column,
-              end_column: end_column,
               annotation_level: annotation_level,
               message: message
             }
+            # Annotations only support start and end columns on the same line
+            if start_line == end_line
+              annotation.merge({start_column: start_column, end_column: end_column})
+            end
+
             annotations.push(annotation)
           end
         end