Run the bootclasspath through ijar (#324)

This reduces disk space and cache usage and should speed up Turbine actions.

```
ls -lah bazel-out/darwin_arm64-fastbuild/bin/external/rules_java+/toolchains/platformclasspath*.jar
-r-xr-xr-x@ 1 fmeum    24M Sep 25 11:36 bazel-out/darwin_arm64-fastbuild/bin/external/rules_java+/toolchains/platformclasspath.jar
-r-xr-xr-x@ 1 fmeum   133M Sep 25 11:36 bazel-out/darwin_arm64-fastbuild/bin/external/rules_java+/toolchains/platformclasspath_unstripped.jar
```

Closes #324

COPYBARA_INTEGRATE_REVIEW=https://github.com/bazelbuild/rules_java/pull/324 from fmeum:ijar-bootclasspath 25b0af0de4cc8464f6fc24dd3fd46475e65bdc1e
PiperOrigin-RevId: 816643474
Change-Id: I27082108be70825ca691c17a0d1eedc7342ad064
2 files changed
tree: ab4d8b9b31d03964e5a93348b30b4f93cc27da92
  1. .bazel_checkout/
  2. .bazelci/
  3. .bcr/
  4. .github/
  5. distro/
  6. examples/
  7. java/
  8. test/
  9. third_party/
  10. toolchains/
  11. .bazelignore
  12. .bazelrc
  13. .gitignore
  14. AUTHORS
  15. BUILD
  16. CODEOWNERS
  17. CONTRIBUTING.md
  18. LICENSE
  19. MODULE.bazel
  20. README.md
  21. renovate.json
  22. WORKSPACE
  23. WORKSPACE.bzlmod
README.md

rules_java

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Java Rules for Bazel https://bazel.build.

Documentation

For a quickstart tutorial, see https://bazel.build/start/java

For slightly more advanced usage, like setting up toolchains or writing your own java-like rules, see https://bazel.build/docs/bazel-and-java

Core Java rules

Add a load like:

load("@rules_java//java:java_library.bzl", "java_library")

to your BUILD / BUILD.bazel / bzl` files

For detailed docs on the core rules, see https://bazel.build/reference/be/java