feat: introduce zstd toolchain

[thesayyn]

Changes are visible to end-users: yes

• Searched for relevant documentation and updated as needed: no
• Breaking change (forces users to change their own code or config): no
• Suggested release notes appear below: yno

Test plan

• New test cases added

[aspect-workflows]

Test

1 test target passed

Targets

//docs:update_27_test [k8-opt] 186ms

Total test execution time was 186ms. 229 tests (99.6%) were fully cached saving 39s.

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Test

e2e/copy_to_directory

All tests were cache hits

6 tests (100.0%) were fully cached saving 660ms.

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Test

e2e/coreutils

All tests were cache hits

4 tests (100.0%) were fully cached saving 578ms.

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Test

e2e/external_copy_to_directory

All tests were cache hits

1 test (100.0%) was fully cached saving 52ms.

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Test

e2e/smoke

All tests were cache hits

6 tests (100.0%) were fully cached saving 1s.

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Buildifier      Format      Gazelle