build: Add xtask automation for binding version management (microsoft#491)

* build: Add xtask automation for binding version management

Introduces a dedicated xtask crate that keeps language binding versions
in sync with the core regorus crate, following the workflow pattern used
by rust-analyzer, gitoxide, and ripgrep.

Key features:
- Git-based change detection: compares binding source files against a
  base ref (merge-base with origin/main by default) plus unstaged/
  untracked files to identify which bindings have been modified
- SemVer-aware bumping: binding edits trigger a minor version increment
  (e.g. 0.5.1 → 0.6.0) under pre-1.0 semantics, signaling potential
  breaking changes; clean bindings simply align to the root version
- Multi-language support: updates Cargo manifests (Rust FFI, Java,
  Python, WASM, Ruby), Maven pom.xml (Java), Ruby version constants,
  and C# project files in a single pass
- CI integration: --check mode fails fast when manifests are out of
  sync, ensuring pre-commit and release-plz workflows catch stale
  versions before merge

Integration points:
- release-plz.toml: runs cargo xtask bindings --base-ref origin/main
  after bumping the root crate, so binding versions are updated
  atomically during the release process
- scripts/pre-commit: invokes cargo xtask bindings --check to block
  commits that would leave bindings out of sync
- .cargo/config.toml: defines cargo xtask alias for convenience

Documentation includes inline examples showing how version bumps behave
when bindings are ahead/behind the root, and notes that the minor
field acts as the major version under SemVer 0.y.z initial development
phase.

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>

* build: refresh xtask tooling, workflows, and locks

- cargo xtask bindings: keep the binding version-sync pipeline intact
- cargo xtask update-deps: new helper to regenerate workspace/binding Cargo.lock files
- workflows: auto-detect the Java jar version in CI and temporarily disable the Ruby workflow
- lock files: refresh root + binding snapshots after the dependency sweep

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>

---------

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>

Author: anakrish

.cargo/config.toml

@@ -0,0 +1,2 @@
+[alias]
+xtask = "run --package xtask --"

.github/workflows/test-java.yml

@@ -29,12 +29,19 @@ jobs:
           cargo clippy --all-targets --no-deps -- -Dwarnings
           cargo build --release --manifest-path bindings/java/Cargo.toml --locked
 
+      - name: Capture binding version
+        run: |
+          version=$(cargo metadata --manifest-path bindings/java/Cargo.toml --format-version 1 \
+            | jq -r '.packages[] | select(.name == "regorus-java") | .version')
+          echo "REGORUS_JAVA_VERSION=$version" >> "$GITHUB_ENV"
+
       - name: Build jar
         run: mvn package
         working-directory: ./bindings/java
 
       - name: Test jar
         run: |
-          javac -cp target/regorus-java-0.2.2.jar Test.java
-          java -Djava.library.path=target/release -cp target/regorus-java-0.2.2.jar:. Test
+          jar="regorus-java-${REGORUS_JAVA_VERSION}.jar"
+          javac -cp "target/${jar}" Test.java
+          java -Djava.library.path=target/release -cp "target/${jar}:." Test
         working-directory: ./bindings/java

.github/workflows/test-ruby.yml

@@ -8,6 +8,7 @@ on:
 
 jobs:
   test:
+    if: false # temporarily disabled
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository