feat(issue-77): handle multiple target branches

fix: https://github.com/kiegroup/git-backporting/issues/77

This enhancement allow users to backport the same change to multiple
branches with one single tool invocation

src/service/logger/logger-service.ts

@@ -3,6 +3,10 @@
  */
 export default interface LoggerService {
 
+  setContext(newContext: string): void;
+
+  clearContext(): void;
+
   trace(message: string): void;
 
   debug(message: string): void;