feat: support unmanaged generic type constraint

[vbreuss]

This PR adds support for the unmanaged generic type constraint in Mockolate's code generation. The unmanaged constraint is a special type constraint in C# that requires a type to be an unmanaged type (value type with no reference-type fields).

Key changes:

• Updated generic constraint handling to properly position unmanaged constraint (must come before other constraints)
• Added test coverage for unmanaged constraint scenarios
• Refactored code to remove unused properties from Type entity and improve event handling code

[Copilot]

Pull request overview

This PR adds support for the unmanaged generic type constraint in Mockolate's code generation. The unmanaged constraint is a special type constraint in C# that requires a type to be an unmanaged type (value type with no reference-type fields).

Key changes:

• Updated generic constraint handling to properly position unmanaged constraint (must come before other constraints)
• Added test coverage for unmanaged constraint scenarios
• Refactored code to remove unused properties from Type entity and improve event handling code

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
Source/Mockolate.SourceGenerators/Entities/GenericParameter.cs	Reordered constraint generation logic to emit unmanaged first, fixing constraint ordering rules
Source/Mockolate.SourceGenerators/Entities/Type.cs	Removed unused properties (IsArray, IsTypeParameter, ElementType) and ToString override
Source/Mockolate.SourceGenerators/Entities/Class.cs	Refactored event filtering to use clearer tuple syntax and removed unused void type mapping
Tests/Mockolate.SourceGenerators.Tests/Sources/ForMockTests.ImplementClassTests.cs	Added test cases for unmanaged and other constraint combinations
Tests/Mockolate.SourceGenerators.Tests/Sources/ForMockTests.DelegateTests.cs	Added test for Span/ReadOnlySpan delegate parameters
Tests/Mockolate.SourceGenerators.Tests/GeneralTests.cs	Added comprehensive test for various generic type parameters and updated attribute test fixture

[github-actions]

🚀 Benchmark Results

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.3 LTS (Noble Numbat)

AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.101

[Host] : .NET 10.0.1 (10.0.1, 10.0.125.57005), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
Simple_Mockolate	1.462 μs	0.0073 μs	0.0064 μs	0.2232	-	3.66 KB
Simple_Moq	180.994 μs	1.5414 μs	1.4418 μs	0.4883	-	14.77 KB
Simple_NSubstitute	5.635 μs	0.0158 μs	0.0148 μs	0.5569	0.0076	9.14 KB
Simple_FakeItEasy	6.174 μs	0.0235 μs	0.0220 μs	0.4959	-	8.11 KB

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
91.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Test Results

    14 files  ± 0      14 suites  ±0   6m 1s ⏱️ +31s
 1 791 tests + 5   1 790 ✅ + 5  1 💤 ±0  0 ❌ ±0 
11 966 runs  +15  11 965 ✅ +15  1 💤 ±0  0 ❌ ±0 

Results for commit 54c0aca. ± Comparison against base commit d6d691f.

[github-actions]

This is addressed in release v0.46.0.