Add Ruby language analyzer and related functionality

- Introduced global usings for Ruby analyzer.
- Implemented RubyLockData, RubyLockEntry, and RubyLockParser for handling Gemfile.lock files.
- Created RubyPackage and RubyPackageCollector to manage Ruby packages and vendor cache.
- Developed RubyAnalyzerPlugin and RubyLanguageAnalyzer for analyzing Ruby projects.
- Added tests for Ruby language analyzer with sample Gemfile.lock and expected output.
- Included necessary project files and references for the Ruby analyzer.
- Added third-party licenses for tree-sitter dependencies.

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Fixtures/lang/ruby/basic/Gemfile.lock

@@ -0,0 +1,16 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    puma (6.4.2)
+      nio4r (~> 2.0)
+    rake (13.1.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  puma (~> 6.4)
+  rake (~> 13.0)
+
+BUNDLED WITH
+   2.5.10

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Fixtures/lang/ruby/basic/expected.json

@@ -0,0 +1,65 @@
+[
+  {
+    analyzerId: ruby,
+    componentKey: purl::pkg:gem/custom-gem@1.0.0,
+    purl: pkg:gem/custom-gem@1.0.0,
+    name: custom-gem,
+    version: 1.0.0,
+    type: gem,
+    usedByEntrypoint: false,
+    metadata: {
+      declaredOnly: true,
+      lockfile: vendor/cache/custom-gem-1.0.0.gem,
+      source: vendor-cache
+    },
+    evidence: [
+      {
+        kind: file,
+        source: vendor-cache,
+        locator: vendor/cache/custom-gem-1.0.0.gem
+      }
+    ]
+  },
+  {
+    analyzerId: ruby,
+    componentKey: purl::pkg:gem/puma@6.4.2,
+    purl: pkg:gem/puma@6.4.2,
+    name: puma,
+    version: 6.4.2,
+    type: gem,
+    usedByEntrypoint: false,
+    metadata: {
+      declaredOnly: true,
+      lockfile: Gemfile.lock,
+      source: rubygems
+    },
+    evidence: [
+      {
+        kind: file,
+        source: rubygems,
+        locator: Gemfile.lock
+      }
+    ]
+  },
+  {
+    analyzerId: ruby,
+    componentKey: purl::pkg:gem/rake@13.1.0,
+    purl: pkg:gem/rake@13.1.0,
+    name: rake,
+    version: 13.1.0,
+    type: gem,
+    usedByEntrypoint: false,
+    metadata: {
+      declaredOnly: true,
+      lockfile: Gemfile.lock,
+      source: rubygems
+    },
+    evidence: [
+      {
+        kind: file,
+        source: rubygems,
+        locator: Gemfile.lock
+      }
+    ]
+  }
+]

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Lang/Ruby/RubyLanguageAnalyzerTests.cs

@@ -0,0 +1,19 @@
+using StellaOps.Scanner.Analyzers.Lang.Ruby;
+using StellaOps.Scanner.Analyzers.Lang.Tests.Harness;
+using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.Lang.Ruby;
+
+public sealed class RubyLanguageAnalyzerTests
+{
+    [Fact]
+    public async Task GemfileLockProducesDeterministicInventoryAsync()
+    {
+        var fixture = TestPaths.ResolveFixture(lang, ruby, basic);
+        var golden = Path.Combine(fixture, expected.json);
+        await LanguageAnalyzerTestHarness.AssertDeterministicAsync(
+            fixture,
+            golden,
+            new ILanguageAnalyzer[] { new RubyLanguageAnalyzer() });
+    }
+}

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/StellaOps.Scanner.Analyzers.Lang.Tests.csproj

@@ -33,6 +33,7 @@
   <ItemGroup>
     <ProjectReference Include="../../__Libraries/StellaOps.Scanner.Analyzers.Lang/StellaOps.Scanner.Analyzers.Lang.csproj" />
     <ProjectReference Include="../../__Libraries/StellaOps.Scanner.Analyzers.Lang.DotNet/StellaOps.Scanner.Analyzers.Lang.DotNet.csproj" />
+    <ProjectReference Include="../../__Libraries/StellaOps.Scanner.Analyzers.Lang.Ruby/StellaOps.Scanner.Analyzers.Lang.Ruby.csproj" />
     <ProjectReference Include="../../__Libraries/StellaOps.Scanner.Analyzers.Lang.Rust/StellaOps.Scanner.Analyzers.Lang.Rust.csproj" />
     <ProjectReference Include="../../__Libraries/StellaOps.Scanner.Core/StellaOps.Scanner.Core.csproj" />
   </ItemGroup>
@@ -44,4 +45,4 @@
   <ItemGroup>
     <None Include="Fixtures\**\*" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
-</Project>
+</Project>