Adds comprehensive Settings page with multiple configuration tabs

Introduces a new Settings page with configurable modules:
- General company information
- Calendar and booking settings
- Billing and payment configurations
- Tracking and analytics integrations

Implements modular ViewComponents for each settings section
Enhances user experience with toggle switches and detailed configuration options

PlanTempus.Application/wwwroot/css/services.css

@@ -3,6 +3,7 @@
  *
  * Feature-specific styling only.
  * Reuses:
+ *   - swp-action-bar (components.css)
  *   - swp-stat-card (stats.css)
  *   - swp-data-table (components.css)
  *   - swp-sticky-header, swp-page-container (page.css)
@@ -16,21 +17,8 @@
  */
 
 /* ===========================================
-   SERVICES HEADER (Search + Button)
+   SEARCH INPUT
    =========================================== */
-
-swp-services-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  margin-bottom: var(--section-gap);
-}
-
-swp-services-header swp-btn-group {
-  display: flex;
-  gap: var(--spacing-3);
-}
-
 swp-search-input {
   display: flex;
   align-items: center;