Add back cabal files for jni, jvm, and inline-java

[facundominguez]

Addresses #198

This PR configures gazelle_cabal to generate build rules from cabal files.

I had to make cat-tokens.sh a Haskell binary so gazelle_cabal can generate bazel rules that expose it to ghc.

[Copilot]

Pull Request Overview

Adds a standalone Cabal manifest for the JNI bindings and syncs Bazel rules via gazelle_cabal to restore jni.cabal support.

• Introduce jni.cabal with library, executable, and test-suite configurations
• Replace the sed-based genrule with a Haskell cat-tokens preprocessor tool
• Update BUILD rules across tests, jvm, jvm-types, and top-level projects to wire in the new plugin and tool paths

Reviewed Changes

Copilot reviewed 21 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/BUILD.bazel	Adjust haskell_test to include size, plugin, tools, deps
shell.nix	Refine host_platform instruction message
shell-stack.nix	Add Nix shell definition for Stack-based development
nixpkgs.nix	Update fetchTarball invocation to use sha256 record
jvm/tests/BUILD.bazel	Reorder haskell_test fields for consistency
jvm/benchmarks/BUILD.bazel	Reorder haskell_binary fields for consistency
jvm/BUILD.bazel	Normalize glob quoting and move visibility earlier
jvm-types/src/test/haskell/BUILD.bazel	Update test rule with size and extra_srcs
jvm-types/BUILD.bazel	Reorder deps, plugins, and visibility
jni/tests/Spec.hs	Adjust HSPEC_DISCOVER preprocessor invocation
jni/tests/BUILD.bazel	Remove legacy jni tests BUILD file
jni/src/linear-types/Foreign/JNI/Safe.hs	Add GHC OPTIONS for cat-tokens preprocessor
jni/src/common/Foreign/JNI/Unsafe/Internal.hs	Add GHC OPTIONS for cat-tokens preprocessor
jni/jni.cabal	New Cabal file declaring library, tool, and test-suite
jni/cat-tokens/Main.hs	Implement Haskell-based token concatenator
jni/cat-tokens	Remove old shell-based concatenator
jni/Setup.hs	Add minimal Setup.hs for Cabal support
jni/BUILD.bazel	Regenerate Bazel rules for jni.cabal via gazelle_cabal
WORKSPACE	Add gazelle_cabal, stackage-exe, and related deps
BUILD.bazel	Configure Gazelle integration and update inline-java rule
.github/workflows/build.yml	Run bazel gazelle in CI and update job naming

Comments suppressed due to low confidence (3)

jni/src/linear-types/Foreign/JNI/Safe.hs:66

• [nitpick] This comment references cat-tokens/Main.hs, but other modules refer to jni/cat-tokens/Main.hs. Please standardize the path so readers can locate the script consistently.

-- a portable way. See cat-tokens/Main.hs.

jni/src/common/Foreign/JNI/Unsafe/Internal.hs:16

• [nitpick] The path in this comment differs from the one in Safe.hs. Consider unifying the reference to the cat-tokens/Main.hs tool location for clarity.

-- a portable way. See note cat-tokens in jni/cat-tokens/Main.hs.

jni/jni.cabal:72

• In the test-suite spec stanza, the type field is split across two lines. Cabal expects a single-line scalar (type: exitcode-stdio-1.0), so this should be collapsed to one line.

  type: