feat(dashboard): add date filter and stat groups components

- Implemented DashboardDateFilter component for selecting date ranges.
- Created DashboardStatGroups component to display various dashboard statistics.
- Added dashboard chart data processing logic to support new chart specifications.
- Introduced reusable Chart components for rendering different types of charts.

Backend/ERPCore.Tests/PermissionCoverageTests.cs

@@ -157,6 +157,14 @@ public class PermissionCoverageTests
     [InlineData("hrm.payroll")]
     [InlineData("sales-returns")]
     [InlineData("settings.audit-logs")]
+    [InlineData("dashboard.stock")]
+    [InlineData("dashboard.procurement")]
+    [InlineData("dashboard.approvals")]
+    [InlineData("dashboard.sales")]
+    [InlineData("dashboard.accounts")]
+    [InlineData("dashboard.hrm")]
+    [InlineData("dashboard.production")]
+    [InlineData("dashboard.service")]
     public void NewPermissions_AreSeeded(string code)
     {
         using var db = CreateContext();