feat: Introduces a new target_tar_toolchain_type

[sfc-gh-dbieliaiev]

This PR is a follow-up to bazel-contrib/bazel-lib#1180 which is supposed to help with the issue described in bazel-contrib/rules_oci#769. The description of the issue and proposal are in bazel-contrib/rules_oci#844 PR.

CC @alexeagle @fmeum

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⚠️ Buildkite build #159 failed.

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[fmeum]

The CI failure is unrelated, but please add feat: to the PR title.

[sfc-gh-dbieliaiev]

@fmeum Thanks, already done

[fmeum]

We could call target_type runtime_type, but I'm not sure whether that's clearly better.

We may need to update awk to get past the outage.

[sfc-gh-dbieliaiev]

We could call target_type runtime_type, but I'm not sure whether that's clearly better.

We may need to update awk to get past the outage.

Although I prefer target type more as it illustrates direct connection with target_compatible_with attribute, generally I don't mind changing, so please let me know if the decision is final.

[fmeum]

Yeah, let's keep target_type for precisely that reason.

[alexeagle]

thanks!