docs: add draft pr tracking to readme

Signed-off-by: Zack Koppert <[email protected]>

Author: zkoppert

README.md

@@ -20,6 +20,7 @@ Feel free to inquire about its usage by creating an issue in this repository.
 | Time to Close                     | The period from creation to closure.\*                                                     |
 | Time to Answer (Discussions Only) | The time from creation to an answer.                                                       |
 | Time in Label                     | The duration from label application to removal, requires `LABELS_TO_MEASURE` env variable. |
+| Time in Draft (PRs Only)          | The duration from creation to the PR being marked as ready for review.                     |
 
 \*For pull requests, these metrics exclude the time the PR was in draft mode.
 
@@ -151,6 +152,7 @@ This action can be configured to authenticate with GitHub App Installation or Pe
 | `HIDE_TIME_TO_ANSWER`         | False    | False                                      | If set to `true`, the time to answer a discussion will not be displayed in the generated Markdown file.                                                                                                                                                                                                    |
 | `HIDE_TIME_TO_CLOSE`          | False    | False                                      | If set to `true`, the time to close will not be displayed in the generated Markdown file.                                                                                                                                                                                                                  |
 | `HIDE_TIME_TO_FIRST_RESPONSE` | False    | False                                      | If set to `true`, the time to first response will not be displayed in the generated Markdown file.                                                                                                                                                                                                         |
+| `DRAFT_PR_TRACKING`          | False    | False                                      | If set to `true`, draft PRs will be included in the metrics as a new column and in the summary stats.                                                                                                                                                                                                                                                |
 | `IGNORE_USERS`                | False    | False                                      | A comma separated list of users to ignore when calculating metrics. (ie. `IGNORE_USERS: 'user1,user2'`). To ignore bots, append `[bot]` to the user (ie. `IGNORE_USERS: 'github-actions[bot]'`) Users in this list will also have their authored issues and pull requests removed from the Markdown table. |
 | `ENABLE_MENTOR_COUNT`         | False    | False                                      | If set to 'TRUE' count number of comments users left on discussions, issues and PRs and display number of active mentors                                                                                                                                                                                   |
 | `MIN_MENTOR_COMMENTS`         | False    | 10                                         | Minimum number of comments to count as a mentor                                                                                                                                                                                                                                                            |