Switch between version parsers

What does this MR do?

• Add new method SemverDialects.parse_version. It uses the dedicated version parser if any, and falls back to the existing parser.
• Swap arguments of IntervalParser.parse for consistency.

This has been successfully tested on top of Maven support (!59 - merged), allowing to resolve all specs of expectations/version_sat/maven.yml but one.

In the future we might remove the fall back mechanism after declaring VersionParser.parse for every supported type. These might reuse SemanticVersion.new, Semver2::VersionParser or any other parser.

What are the relevant issue numbers?

gitlab-org/gitlab#386070 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for this project, if necessary
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Security reports checked/validated by reviewer