- introduce new configuration flag to fetchReleaseInformation

- if enabled, it will unlock the ability to use new placeholders
  - `${{ DAYS_SINCE }}`
  - `${{ FROM_TAG_DATE }}`
  - `${{ TO_TAG_DATE }}`
- refactor to carry on the full `TagInfo` information instead of only the tagname
- refresh testcases to new apis

action.yml

@@ -29,6 +29,9 @@ inputs:
   fetchReviewers:
     description: 'Will enable fetching the users/reviewers who approved the PR'
     default: "false"
+  fetchReleaseInformation:
+    description: 'Will enable fetching release information for the tags. E.g. creation date'
+    default: "false"
   commitMode:
     description: 'Enables a `light` commit based mode. This mode generates changelogs based on the commits. Please note that this is not officially supported, and lacks a lot of features only possible with PRs.'
     default: "false"