[improve][misc] Add IssueNavigationLink for IDEA git log

[alpreu]

Motivation

This enables GitHub hyperlinks in IDEA for commits containing PR information.
Clicking on the link will directly open the corresponding GitHub PR.
See screenshots below:
NOW

BEFORE

Modifications

• changed .gitignore
• added vcs.xml IDEA file

Verifying this change

• Make sure that the change passes the CI checks.

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The binary protocol
• The REST endpoints
• The admin CLI options
• Anything that affects deployment

Documentation

• doc-required
  (Your PR needs to update docs and you will update later)

• doc-not-needed
  (Please explain why)

• doc
  (Your PR contains doc changes)

• doc-complete
  (Docs have been already added)

Matching PR in forked repository

PR in forked repository: alpreu#1

[alpreu]

As a follow-up, we could improve this even further by also linking to the corresponding WIKI page for PIPs.

This would require a change to future PIP URLs in the wiki.
Right now they are either a Github Issue URL or in the form of
https://github.com/apache/pulsar/wiki/PIP-198:-Standardize-PR-Naming-Convention-using-GitHub-Actions
To have a deterministic link all future PIPs would need to be created in the wiki and the URL would need to look like https://github.com/apache/pulsar/wiki/PIP-198
This is an entirely different discussion though.

[lhotari]

Nice improvement!

[heesung-sn]

thank you for this update.

[alpreu]

/pulsarbot run-failure-checks