feat(versions): add base filter toggle UI and styling

Add CSS classes and JavaScript logic for the base filter toggle button in the versions toolbar. The filter allows users to switch between showing all versions or only versions matching the current base model. Includes styling for different states (active, hover, disabled) and accessibility features like screen reader support.

locales/zh-TW.json

@@ -938,6 +938,18 @@
                     "viewLocalVersions": "檢視所有本地版本",
                     "viewLocalTooltip": "敬請期待"
                 },
+                "filters": {
+                    "label": "基礎篩選",
+                    "state": {
+                        "showAll": "所有版本",
+                        "showSameBase": "相同基礎模型"
+                    },
+                    "tooltip": {
+                        "showAllVersions": "切換為顯示所有版本",
+                        "showSameBaseVersions": "僅顯示與目前基礎模型相符的版本"
+                    },
+                    "empty": "沒有符合目前基礎模型篩選的版本。"
+                },
                 "empty": "此模型尚無版本歷史。",
                 "error": "載入版本失敗。",
                 "missingModelId": "此模型缺少 Civitai 模型 ID。",