refactor: 支持主题样式

Author: ArgoZhang

src/BootstrapBlazor/Components/Layout/LayoutSplitebar.razor.scss

@@ -8,6 +8,8 @@
     display: none;
 
     .layout-splitebar-body {
+        --bb-splitebar-body-hover-bg: #{$bb-splitebar-body-hover-bg};
+        --bb-splitebar-body-drag-hover-bg: #{$bb-splitebar-body-drag-hover-bg};
         position: absolute;
         inset: 0px -2px;
         cursor: col-resize;

src/BootstrapBlazor/wwwroot/scss/theme/bootstrapblazor.scss

@@ -346,6 +346,10 @@ $bb-layout-menu-item-hover-bg: #409eff;
 $bb-layout-logo-border-color: #d5d5d5;
 $bb-layout-logo-bg: #0e77e3;
 
+// LayoutSplitebar
+$bb-splitebar-body-hover-bg: rgba(175, 184, 193, 0.2);
+$bb-splitebar-body-drag-hover-bg: rgb(9, 105, 218);
+
 // Light
 $bb-light-bg: radial-gradient(circle, #fff, #aaa, #333);
 $bb-light-danger-start-color: #e17777;