Improved Generate Command Output Readability

[butschster]

This PR enhances the output of the generate command to make it more concise and readable, addressing issues with the current verbose format.

Changes

• New Renderer: Added a dedicated GenerateCommandRenderer class to handle output formatting consistently
• Better Visual Indicators: Replaced text labels with symbols (✓ for success, ! for warnings)
• Improved Alignment: Added dot alignment for document descriptions and paths for easier scanning
• Proper Log Separation: Moved logging messages to the logger instead of displaying them in the output

Before

 [INFO] Compiling Project structure overview...
                                                                            
 [OK] Document compiled into project-structure.md                           
                                                                            
 [INFO] Compiling Core Interfaces...
                                                                            
 [OK] Document compiled into core/interfaces.md                             
                                                                            
 [INFO] Compiling Modifiers System...
                                                                            
 [WARNING] Document compiled into modifiers/modifiers-core.md with errors   
                                                                            
 * Error in FileSource: Some directories or files contain invalid paths

After

 ✓ Source Token counter [sources/token-counter.md].......................................................................
 ✓ Document source renderer [sources/source-renderer.md].................................................................
 ! Modifiers System [modifiers/modifiers-core.md]........................................................................
    ✗ Error in FileSource: Some directories or files contain invalid paths:

 ✓ PHP Content Modifiers [modifiers/php-modifiers.md]....................................................................
 ! Sanitizer Modifier [modifiers/sanitizer.md]...........................................................................
    ✗ Error in FileSource: Some directories or files contain invalid paths:

 ✓ Path Filtering Utilities [utilities/path-filters.md]..................................................................
 ✓ Tree Building Utilities [utilities/tree-builder.md]...................................................................
 ✓ HTTP Client [utilities/http-client.md]................................................................................
 ✓ Binary Updater [utilities/binary-updater.md]..........................................................................
 ✓ GitHub Client [utilities/github-client.md]............................................................................