Add custom job scheduling and dependency combiners

- Introduce `CombinedDependenciesJob` for efficient dependency handling and memory management
- Add `ScheduleCustom<T>` for user-defined job execution/free logic
- Refactor `JobInfo` and `JobDataPool<T>` for safer resource management and custom function support
- Improve SPMD extension type constraint formatting
- Update SPMD project content path and increment assembly versions
- Add unit tests for combined dependencies and custom jobs
- Remove `[Timeout]` from tests to prevent spurious failures
- Add TODO for future `WideLane` optimizations
- Replace legacy .sln with .slnx for better solution structure

Misaki.HighPerformance.Test/UnitTest/Buffer/TestAllocationManager.cs

@@ -7,7 +7,6 @@ namespace Misaki.HighPerformance.Test.UnitTest.Buffer;
 public class TestAllocationManager
 {
     [TestMethod]
-    [Timeout(1000, CooperativeCancellation = true)]
     public void PersistentAllocationTest()
     {
         var ptr1 = new MemoryBlock(1024, 8, AllocationHandle.Persistent);
@@ -24,7 +23,6 @@ public class TestAllocationManager
     }
 
     [TestMethod]
-    [Timeout(1000, CooperativeCancellation = true)]
     public void TempAllocationTest()
     {
         var ptr1 = new MemoryBlock(1024, 8, AllocationHandle.Temp);
@@ -43,7 +41,6 @@ public class TestAllocationManager
     }
 
     [TestMethod]
-    [Timeout(1000, CooperativeCancellation = true)]
     public void FreeListAllocationTest()
     {
         var ptr1 = new MemoryBlock(1024, 8, AllocationHandle.FreeList);
@@ -60,7 +57,6 @@ public class TestAllocationManager
     }
 
     [TestMethod]
-    [Timeout(1000, CooperativeCancellation = true)]
     public void StackAllocationTest()
     {
         var thread = new Thread(() =>