refactor: Move plugins folder creationf to DefaultFiles. Create example file for disabling plugins. Improve logging for installed plugin extensions.

build: Add signing and publishing. Will be published to GitLab, GitHub, git.griefed, OSSRH on new tag creation.

build: Switch VersionChecker to library implementation. Update jms-server. Minor URL refactorings in gradle publishing.

ci: Deactivate push on docker tests. Remove unnecessary file renaming in build release. Properly run publish job.

Bumps com.github.ben-manes.versions from 0.41.0 to 0.42.0.

---
updated-dependencies:
- dependency-name: com.github.ben-manes.versions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Merge pull request #222 from Griefed/dependabot-gradle-dependabot-com.github.ben-manes.versions-0.42.0

build(deps): bump com.github.ben-manes.versions from 0.41.0 to 0.42.0

Bumps versionchecker from 1.0.4 to 1.0.5.

---
updated-dependencies:
- dependency-name: de.griefed:versionchecker
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

chore(deps): update ghcr.io/griefed/baseimage-ubuntu-jdk-8 docker tag to v2.0.3

See merge request !179

chore(deps): update jamesives/github-pages-deploy-action action to v4.2.3

See merge request !180

chore(deps): update dependency @quasar/app to v3.3.2

See merge request !181

chore(deps): update dependency eslint-plugin-vue to v8.4.1

See merge request !182

feat: Create server packs from zipped modpacks. Point modpackDir at a ZIP-file which contains a modpack in the ZIP-archives root.

build(deps): bump versionchecker from 1.0.4 to 1.0.5