RFR: 1823: Mailing list bot should include link to comment on the Git forge [v6]

[Zhao Song]

> This patch will add the ability to attach comment/reviewComment/review link to the email generated by mlbridge bot
> 
> The implementation for GitHub is straightforward, we can extract the URL for a specific comment or review from the JSON response using the `html_url` field and include it in the email. 
> 
> For GitLab, we will need to generate the URL using the `id` field in `note,` since GitLab does not provide an field like `html_url` in its JSON responses.

Zhao Song has updated the pull request incrementally with one additional commit since the last revision:

  fix a problem

-------------

Changes:
  - all: https://git.openjdk.org/skara/pull/1478/files
  - new: https://git.openjdk.org/skara/pull/1478/files/f7bee158..d7aa239d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=skara&pr=1478&range=05
 - incr: https://webrevs.openjdk.org/?repo=skara&pr=1478&range=04-05

  Stats: 15 lines in 2 files changed: 0 ins; 2 del; 13 mod
  Patch: https://git.openjdk.org/skara/pull/1478.diff
  Fetch: git fetch https://git.openjdk.org/skara pull/1478/head:pull/1478

PR: https://git.openjdk.org/skara/pull/1478