fork-v2.12.4-fork.1

Fork release fork-v2.12.4-fork.1 of defold/extender for the
birdingman0626/extender fork. Built from d7e190e657501d215dd02568e6b752eb5832a397.

See FORK_NOTES.md for the full list of
divergences from upstream and the rebase guide used when merging
upstream/dev. Key adds:

• Windows-host standalone support (no Docker)
• Two cherry-picks: defold#532 (emscripten link-flag validation), defold#646 (LOCAL cache soft-miss)
• Dependency bumps matching open dependabot PRs
• Zero-warning build (-Xlint:all)

Artifacts attached:

• extender-*.jar — the standalone server fat jar (drop into server/app/extender.jar)
• extender-client-*.jar — bob.jar's client of the extender
• manifestmergetool*.jar — Android manifest merger used by the server