feat: support asdf formated version strings

[tisoft]

• allow short and long names for distributions
• allow the distribution to prefix or suffix the version

[tisoft]

See discussion in https://github.com/version-fox/vfox/discussions/287

[Copilot]

Pull Request Overview

This PR refactors version string parsing to support asdf-formatted version strings with distribution names in both prefix and suffix positions. The changes modernize the architecture by consolidating short/long name mappings and introducing flexible version parsing logic.

• Moves short name mappings from a separate module into a comprehensive distribution version parser
• Adds support for parsing version strings with distributions as either prefixes or suffixes (e.g., "temurin-11" or "11-temurin")
• Introduces bidirectional mapping between short names and full distribution names

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
lib/shortname.lua	Removed - functionality moved to distribution_version.lua
lib/distribution_version.lua	New module providing comprehensive version string parsing with flexible distribution positioning
hooks/pre_use.lua	New hook for pre-processing user input versions
hooks/pre_install.lua	Updated to use new distribution version parser
hooks/parse_legacy_file.lua	Migrated from shortname module to distribution version parser
hooks/available.lua	Updated to use new distribution parsing logic

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