Refactor XML response handling in device extended and security tests

- Adjusted formatting in XML response strings for consistency in device_extended_test.go and device_security_test.go.
- Improved readability by aligning XML declaration and body content.
- Updated mock server responses to ensure proper handling of various ONVIF operations.

Enhance device security and storage handling

- Refactored struct field declarations in device_security.go and device_storage_test.go for improved clarity.
- Ensured consistent formatting across struct definitions and XML tags.

Standardize whitespace and formatting across multiple files

- Removed unnecessary blank lines and adjusted indentation in discovery, imaging, media, and PTZ server files.
- Improved overall code readability and maintainability by ensuring consistent formatting.

Update example applications for better readability

- Cleaned up whitespace in example applications to enhance code clarity.
- Ensured consistent formatting in main.go files across various examples.

Refactor server and SOAP handler code for consistency

- Standardized struct field declarations and XML tag formatting in server and SOAP handler files.
- Improved readability by aligning struct fields and ensuring consistent use of whitespace.

General code cleanup and formatting adjustments

- Applied consistent formatting across various files, including types.go and test files.
- Enhanced readability by aligning struct fields and removing unnecessary blank lines.

examples/test-server/main.go

@@ -73,7 +73,7 @@ func main() {
 	for i, profile := range profiles {
 		fmt.Printf("\n   Profile %d: %s\n", i+1, profile.Name)
 		fmt.Printf("   Token: %s\n", profile.Token)
-		
+
 		if profile.VideoEncoderConfiguration != nil {
 			fmt.Printf("   Video: %dx%d @ %s\n",
 				profile.VideoEncoderConfiguration.Resolution.Width,
@@ -98,7 +98,7 @@ func main() {
 		// Test PTZ if available
 		if profile.PTZConfiguration != nil {
 			fmt.Println("   PTZ: ✓ Enabled")
-			
+
 			// Get PTZ status
 			status, err := client.GetStatus(ctx, profile.Token)
 			if err == nil {
@@ -121,7 +121,7 @@ func main() {
 	if len(profiles) > 0 && profiles[0].PTZConfiguration != nil {
 		fmt.Println("🎮 Test 5: Testing PTZ Control...")
 		profileToken := profiles[0].Token
-		
+
 		// Absolute move to home position
 		fmt.Println("   Moving to home position...")
 		position := &onvif.PTZVector{