优化 Vuetify 实例配置，添加默认主题和主题设置，以提升主题管理的灵活性和可维护性。

examples/plugin-component/src/vuetify/defaults.ts

@@ -0,0 +1,148 @@
+export default {
+  IconBtn: {
+    icon: true,
+    color: 'default',
+    variant: 'text',
+    VIcon: {
+      size: 24,
+    },
+  },
+  VAlert: {
+    VBtn: {
+      color: undefined,
+    },
+  },
+  VAvatar: {
+    // ℹ️ Remove after next release
+    variant: 'flat',
+    VIcon: {
+      size: 24,
+    },
+  },
+  VBadge: {
+    // set v-badge default color to primary
+    color: 'primary',
+  },
+  VBtn: {
+    // set v-btn default color to primary
+    color: 'primary',
+    elevation: 0,
+  },
+  VCard: {
+    elevation: 0,
+    rounded: 'lg',
+  },
+  VMenu: {
+    elevation: 0,
+  },
+  VChip: {
+    elevation: 0,
+  },
+  VBottomSheet: {
+    elevation: 0,
+  },
+  VDialog: {
+    elevation: 0,
+    rounded: 'lg',
+  },
+  VExpansionPanels: {
+    elevation: 0,
+  },
+  VList: {
+    color: 'primary',
+    elevation: 0,
+  },
+  VListItem: {
+    rounded: 'md',
+  },
+  VPagination: {
+    activeColor: 'primary',
+  },
+  VTabs: {
+    // set v-tabs default color to primary
+    color: 'primary',
+    VSlideGroup: {
+      showArrows: true,
+    },
+  },
+  VTooltip: {
+    // set v-tooltip default location to top
+    location: 'top',
+  },
+  VCheckboxBtn: {
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VCheckbox: {
+    // set v-checkbox default color to primary
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VRadioGroup: {
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VRadio: {
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VSelect: {
+    variant: 'outlined',
+    color: 'primary',
+    hideDetails: 'auto',
+    menuProps: { elevation: 0 },
+  },
+  VRangeSlider: {
+    // set v-range-slider default color to primary
+    color: 'primary',
+    density: 'comfortable',
+    thumbLabel: true,
+    hideDetails: 'auto',
+  },
+  VRating: {
+    // set v-rating default color to primary
+    color: 'rgba(var(--v-theme-on-background),0.23)',
+    activeColor: 'warning',
+    halfIncrements: true,
+  },
+  VProgressCircular: {
+    // set v-progress-circular default color to primary
+    color: 'primary',
+  },
+  VSlider: {
+    // set v-slider default color to primary
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VTextField: {
+    variant: 'outlined',
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VAutocomplete: {
+    variant: 'outlined',
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VCombobox: {
+    variant: 'outlined',
+    color: 'primary',
+    hideDetails: 'auto',
+    menuProps: { elevation: 0 },
+  },
+  VFileInput: {
+    variant: 'outlined',
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VTextarea: {
+    variant: 'outlined',
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+  VSwitch: {
+    // set v-switch default color to primary
+    color: 'primary',
+    hideDetails: 'auto',
+  },
+}