feat(partsTable): add image icon to show/hide photo button

- Add image icon alongside eye icon in show/hide photo button
- Improve visual indication of photo toggle functionality

public/userarea/modal_partsTable.php

@@ -6,7 +6,7 @@
                 <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
             </div>
             <div class="modal-body">
-                <div class="row">
+                <div class="row main-row">
                     <div class="col-md-9">
                         <!-- Prima riga: Elenco Parti, Rinumera, Voce -->
                         <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px;">
@@ -14,6 +14,10 @@
                             <div style="display: flex; align-items: center;">
                                 <button type="button" class="btn btn-info btn-sm" id="renumberPartsBtn" style="padding: 0.1rem 0.5rem; font-size: 0.8rem;">Rinumera Parti</button>
                                 <button type="button" class="btn btn-secondary btn-sm ms-2" id="toggleVoiceBtn" style="padding: 0.1rem 0.5rem; font-size: 0.8rem;"><i class="fas fa-microphone"></i> Voce</button>
+								<button type="button" class="btn btn-primary btn-sm ms-2" id="showHideImageBtn" style="padding: 0.1rem 0.5rem; font-size: 0.8rem;">
+									<i class="fas fa-eye-slash" style="font-size: 0.8rem;"></i>
+									<i class="fas fa-image ms-1" style="font-size: 0.8rem;"></i>
+								</button>
                             </div>
                         </div>
                         <!-- Seconda riga: +, M, MacroMatrice, Matrice globale, Propaga -->