Add nightly CI workflow for slow-tagged Beauti tests #147

[walterxie]

Fix #147

• Add .github/workflows/beauti-tests.yml: runs the beast-fx/Beauti TestFX suite, including tests tagged slow that ci-publish.yml skips on every push/PR (surefire.excludedGroups=slow in the root pom.xml). These are headless-JavaFX GUI tests — slower and more flake-prone — so they run nightly (cron '0 13 * * *', 01:00 NZST/02:00 NZDT) plus on-demand via workflow_dispatch, rather than gating every PR.
• The test command is mvn -pl beast-fx -am test -Pslow-tests -Dtest='test.beastfx.app.**' -Dsurefire.failIfNoSpecifiedTests=false:
  • -pl beast-fx -am also pulls beast-base/beast-pkgmgmt into the reactor (beast-fx depends on both), so without scoping it would rerun their entire unrelated test suites too.
  • -Dtest='test.beastfx.app.**' restricts execution to the Beauti/TestFX package, which only exists in beast-fx.
  • -Dsurefire.failIfNoSpecifiedTests=false stops surefire from hard-failing the build in beast-base/beast-pkgmgmt, where that pattern matches zero classes ("No tests were executed!" is an error by default) — those modules should just build and skip tests, not fail the job.
• Mark DivergenceDatingTest and RateTutorialTest (beast-base) as @Deprecated, pointing to their beast-fx replacements BeautiDivergenceDatingTest / BeautiRateTutorialTest.

Tested in local :

Tests run: 45, Failures: 0, Errors: 0, Skipped: 6