Infer distribution from asdf .tool-versions vendor prefix

[brunoborges]

Why

asdf's .tool-versions encodes the JDK vendor as a prefix on the version string (for example java temurin-17.0.3+7 or java corretto-11.0.14.9.1). Until now setup-java discarded that prefix, so users pointing java-version-file at a .tool-versions file still had to pass distribution explicitly. .sdkmanrc already infers the distribution; this brings .tool-versions to parity.

Fixes: #1081

What

• Reworked the .tool-versions branch of getVersionFromFileContent so the asdf-java vendor prefix is captured in a named distribution group instead of being thrown away. Version parsing is unchanged.
• Added mapAsdfDistribution() which maps asdf-java vendors to setup-java distributions. Packaging variants such as -jre, -musl, -openj9, -crac, and -javafx collapse onto the base vendor, and the two-segment cases graalvm-community and oracle-graalvm are handled explicitly.
• Mirrored the existing .sdkmanrc fallback behavior: unknown or unsupported prefixes (for example openjdk, mandrel, trava) emit a warning and fall back to the distribution input. Prefix-less entries like java 17.0.7 keep resolving exactly as before.

No caller changes were needed. setup-java.ts already consumes versionInfo.distribution generically.

Vendor mapping

asdf-java vendor prefix	setup-java distribution
temurin, adoptopenjdk	temurin
zulu	zulu
corretto	corretto
liberica	liberica
microsoft	microsoft
semeru, ibm	semeru
dragonwell	dragonwell
graalvm, oracle-graalvm	graalvm
graalvm-community	graalvm-community
oracle	oracle
sapmachine	sapmachine
kona	kona
jetbrains	jetbrains

Notes for reviewers

• adoptopenjdk maps to temurin since AdoptOpenJDK became Eclipse Temurin and setup-java's adopt distribution is deprecated/EOL. This includes the adoptopenjdk-openj9 packaging variants, which collapse onto temurin as well.
• Existing version-string parsing (including +build metadata retention and the corretto major-only rule) is untouched; only prefix extraction is new.

Testing

• Added 23 .tool-versions cases in __tests__/util.test.ts covering each supported vendor, prefix-less backward compatibility, and the unknown-prefix warn-and-fall-back path.
• Full suite passes (878/878); format-check and lint are clean; dist/ regenerated.

[Copilot]

Pull request overview

Adds support for inferring distribution from asdf-java vendor prefixes in .tool-versions, bringing it in line with the existing .sdkmanrc distribution inference behavior in actions/setup-java.

Changes:

• Updates .tool-versions parsing to capture an optional vendor prefix into a distribution group and map it to setup-java distributions.
• Introduces mapAsdfDistribution() to normalize asdf-java vendor identifiers (including multi-segment vendors and packaging variants).
• Extends documentation and test coverage with supported vendor mappings and example usage.

Show a summary per file

File	Description
src/util.ts	Captures asdf vendor prefix from .tool-versions, maps it to a setup-java distribution, and threads it through existing version parsing.
__tests__/util.test.ts	Adds .tool-versions test cases for supported vendors, prefix-less behavior, and unsupported vendor warnings.
docs/advanced-usage.md	Documents .tool-versions vendor-prefix distribution inference and lists supported mappings + example.
dist/setup/index.js	Regenerated compiled distribution output reflecting the updated util logic.
dist/cleanup/index.js	Regenerated compiled distribution output reflecting the updated util logic.

Review details

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• Files reviewed: 3/5 changed files
• Comments generated: 1
• Review effort level: Low