Refactor and enhance math and utility libraries

Refactored `sincos` usage across `quaternion` and `random` to use `out` parameters for improved performance. Enhanced `random` struct with updated random direction generation methods.

Added new benchmarks in `MathematicsBenchmark` for vector operations, including SIMD-based `f4` struct. Downgraded target framework to `net9.0` for compatibility.

Introduced `ReadOnlyUnsafeCollection` for low-level memory management. Added utility methods in `CollectionUtility` for span creation and optimized list operations.

Renamed `MemoryUtilities` to `MemoryUtility` and updated all references. Enhanced `ObjectPool` with `Rent` and `TryRent` methods. Enabled `AllowUnsafeBlocks` and AOT compatibility in project configuration.

Performed general code cleanup, including removal of unused methods, improved formatting, and alignment with modern coding practices.

Misaki.HighPerformance.Mathematics.CodeGen/Generators/MatrixGenerator.cs

@@ -515,13 +515,6 @@ namespace Misaki.HighPerformance.Mathematics.CodeGen.Generators
                 }
 
                 GenerateMulMethod();
-
-                sourceBuilder.AppendLine($@"
-        {INLINE_METHOD_ATTRIBUTE}
-        public static {typeInfo.TypeFullName} abs({typeInfo.TypeFullName} value)
-        {{
-            return new({string.Join(", ", s_matrixComponents.Take(typeInfo.Column).Select(c => $"abs(value.{c})"))});
-        }}");
             }
 
             sourceBuilder.Append($@"