feat: add Laravel stack trace visualization tab

[shigristudy]

📝 Description
This PR enhances the log viewer experience for Laravel developers by adding a beautiful Stack Trace tab that automatically appears when Laravel exception logs contain stack trace information.

🚀 What's Changed
Added Stack Trace Tab: A new tab appears automatically for Laravel logs containing [stacktrace] sections
Exception Header Display: Shows exception type, message, and location with proper styling
Stack Trace Frames: Displays numbered frames with file paths, line numbers, and method calls
Performance Optimized: Stack traces are only parsed when the tab is clicked (lazy loading)
Maintains Existing Behavior: Raw tab remains the default, all existing functionality preserved

🎨 Visual Improvements
The new Stack Trace tab provides:

Exception Header: Red-highlighted exception type with clear error message
File Paths: Blue-colored file paths with orange line numbers
Frame Numbers: Gray-styled frame indicators (#0, #1, etc.)
Responsive Design: Works seamlessly on both desktop and mobile
Dark Mode Support: Proper styling for both light and dark themes

💻 Technical Details
Files Modified:

BaseLogTable.vue - Added stack trace detection and parsing logic
Key Functions Added:

hasLaravelStackTrace(log) - Lightweight detection of stack traces
getStackTraceData(log) - Parses exception headers and stack frames
Enhanced getTabsForLog(log) - Includes Stack Trace tab when applicable
Parser Features:

Detects Laravel exception format with [stacktrace] sections
Parses exception headers: [object] (ExceptionType(code: 0): Message at /path/file.php:123)
Extracts stack frames: #0 /path/file.php(123): Class::method()
Handles edge cases for malformed or incomplete stack traces

📱 Usage Example

When viewing a Laravel error log like this:
[2024-01-15 10:30:45] local.ERROR: Call to undefined method  
{"exception":"[object] (Error(code: 0): Call to undefined method App\\Models\\User::invalidMethod() at /app/Http/Controllers/UserController.php:25)
[stacktrace]
#0 /app/Http/Controllers/UserController.php(25): App\\Models\\User::invalidMethod()
#1 /vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): App\\Http\\Controllers\\UserController->show()
#2 /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(43): call_user_func_array()"}

The Stack Trace tab will automatically appear and display:

Exception Type: Error
Message: Call to undefined method App\Models\User::invalidMethod()
Location: in /app/Http/Controllers/UserController.php:25
Stack Frames: Properly formatted with file paths and line numbers

🎯 Benefits
Better Debugging Experience: Developers can quickly identify error locations
Improved Readability: Clean, formatted display vs raw text
Time Saving: No need to manually parse stack traces
Laravel-Specific: Tailored for Laravel's exception format
Non-Breaking: Existing functionality remains unchanged