feat: Update toolbar icons for better clarity and visual consistency

Author: Ashjha75

index.html

@@ -57,16 +57,16 @@
                     <h3>EXPLORER</h3>
                     <div class="sidebar-actions">
                         <button class="btn-icon-small" id="expandAll" title="Expand All">
-                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/chevron-down.svg" alt="Expand All" class="toolbar-icon" />
+                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/arrow-down.svg" alt="Expand All" class="toolbar-icon" />
                         </button>
                         <button class="btn-icon-small" id="collapseAll" title="Collapse All">
-                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/chevron-up.svg" alt="Collapse All" class="toolbar-icon" />
+                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/arrow-up.svg" alt="Collapse All" class="toolbar-icon" />
                         </button>
                         <button class="btn-icon-small" id="selectAll" title="Select All">
-                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/check-all.svg" alt="Select All" class="toolbar-icon" />
+                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/check.svg" alt="Select All" class="toolbar-icon" />
                         </button>
                         <button class="btn-icon-small" id="deselectAll" title="Deselect All">
-                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/checkbox-blank-outline.svg" alt="Deselect All" class="toolbar-icon" />
+                            <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/circle-outline.svg" alt="Deselect All" class="toolbar-icon" />
                         </button>
                         <button class="btn-icon-small" id="clearAll" title="Clear All">
                             <img src="https://raw.githack.com/PKief/vscode-material-icon-theme/main/icons/trash.svg" alt="Clear All" class="toolbar-icon" />