Refactored GitHubNewIssueBodyBuilderUtil to read plugin version fro…

[vitaliyboykocontributor]

…m the jar manifest instead of IntelliJ Platform plugin manager.

Description (*)

Fixed Issues (if relevant)

1. Fixes magento/magento2-phpstorm-plugin#<issue_number>

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with integration/functional tests (if applicable)
• All automated tests passed successfully (all builds are green)