Major improvements: MinIO 4.0.7 compatibility, file handle fixes, clean logging, session management

Key Achievements:
- Downgraded to MinIO 4.0.7 for PowerShell compatibility (eliminated async/await issues)
- Fixed file handle leaks in upload operations (using explicit FileStream management)
- Implemented clean logging (timestamps without redundant prefixes)
- Fixed automatic session variable management (Connect-MinIO stores, cmdlets retrieve)
- Removed duplicate certificate parameters (kept only SkipCertificateValidation)
- Fixed all 'Folder' alias conflicts across cmdlets
- Added correct System.Runtime.CompilerServices.Unsafe.dll version (4.5.3)

 Working Features:
- Connection management (automatic + explicit override)
- Bucket operations (list, create, remove)
- File upload/download (with proper handle release)
- Progress tracking and speed reporting
- Clean verbose logging with timestamps

 Known Issue:
- Chunked operations have threading violations (PowerShell cmdlet methods called from background threads)
- Regular operations work perfectly, chunked operations need threading architecture fix

 Test Results:
- 3.71GB Windows install.wim file tested
- Regular upload/download:  Working
- File handles:  No leaks, immediate deletion possible
- Session management:  Automatic connection storage/retrieval
- Chunked operations:  Threading violations need fix

Simple-Test.ps1

@@ -0,0 +1,34 @@
+# Simple test script for PSMinIO module
+Import-Module ./Module/PSMinIO/PSMinIO.psd1 -Force
+
+Write-Host "=== Testing PSMinIO Module ===" -ForegroundColor Cyan
+
+# Test credentials
+$endpoint = "https://api.s3.gracesolution.info"
+$accessKey = "T34Wg85SAwezUa3sk3m4"
+$secretKey = "PxEmnbQoQJTJsDocSEV6mSSscDpJMiJCayPv93xe"
+
+# Test 1: Connection
+Write-Host "1. Testing Connection..." -ForegroundColor Yellow
+try {
+    $connection = Connect-MinIO -Endpoint $endpoint -AccessKey $accessKey -SecretKey $secretKey
+    Write-Host "✓ Connection successful" -ForegroundColor Green
+    Write-Host "  Endpoint: $($connection.EndpointUrl)" -ForegroundColor Gray
+} catch {
+    Write-Host "✗ Connection failed: $($_.Exception.Message)" -ForegroundColor Red
+    exit 1
+}
+
+# Test 2: Bucket Listing
+Write-Host "2. Testing Bucket Listing..." -ForegroundColor Yellow
+try {
+    $buckets = Get-MinIOBucket
+    Write-Host "✓ Found $($buckets.Count) buckets" -ForegroundColor Green
+    if ($buckets.Count -gt 0) {
+        $buckets | Select-Object -First 3 | Format-Table Name, CreationDate
+    }
+} catch {
+    Write-Host "✗ Bucket listing failed: $($_.Exception.Message)" -ForegroundColor Red
+}
+
+Write-Host "Tests completed!" -ForegroundColor Cyan