Add maven-central badge, when it will occur there

See #89, release log:

• 5ea787e by @MikhailLipanin: correct groupId

Released by Rultor 2.0-SNAPSHOT, see build log

no Maven release?

THIS ONE IS DEPRECATED
Use since 0.0.2 release

See #88, release log:

• 36a7d19 by @MikhailLipanin: fix one more XSL
• e007544 by @MikhailLipanin: fix XML style
• d36ecf0 by @MikhailLipanin: Merge pull request #86 from ob...
• 6c2e3e0 by @MikhailLipanin: eo-version 0.28.11
• 670b723 by @MikhailLipanin: Merge pull request #84 from ob...
• 6390826 by @renovate[bot]: Update dependency info.picocli...
• 54c8f4a by @MikhailLipanin: Merge pull request #28 from ob...
• aa568a3 by @MikhailLipanin: Merge pull request #81 from ob...
• bb301e0 by @MikhailLipanin: Merge pull request #82 from ob...
• cfa8625 by @renovate[bot]: Update actions/checkout action...
• 7379302 by @renovate[bot]: Update dependency com.jcabi:pa...
• 9f70825 by @renovate[bot]: Update dependency com.jcabi:jc...
• 65d676e by @MikhailLipanin: Merge pull request #83 from ob...
• 4e757fa by @MikhailLipanin: fix tests
• af18400 by @MikhailLipanin: compiler plugin
• f916ecd by @MikhailLipanin: Create pdd.yml
• 47eb5de by @MikhailLipanin: Create xcop.yml
• e917ea5 by @MikhailLipanin: fix workflows and changed defa...
• 205d436 by @MikhailLipanin: fix workflow
• 60769b1 by @MikhailLipanin: Merge pull request #73 from Gr...
• and 240 more...

Released by Rultor 2.0-SNAPSHOT, see build log