Adds Kasse (Cash Register) module and related components

Introduces comprehensive cash management functionality with multiple view components for tracking daily transactions, filtering, and reconciliation

Implements:
- Cash calculation and difference tracking
- Dynamic tab switching
- Checkbox selection and row expansion
- Date filtering and approval mechanisms

PlanTempus.Application/Features/Kasse/Components/KasseGodkendelse/Default.cshtml

@@ -0,0 +1,38 @@
+<swp-card>
+    <swp-card-header>
+        <swp-card-title>Afslut dagen</swp-card-title>
+    </swp-card-header>
+    <swp-card-content>
+        <swp-approval-grid>
+            <swp-form-field>
+                <swp-form-label>Status</swp-form-label>
+                <swp-status-row>
+                    <swp-status-badge class="draft">Kladde</swp-status-badge>
+                </swp-status-row>
+            </swp-form-field>
+
+            <swp-form-field>
+                <swp-form-label>Godkendt af (valgfrit)</swp-form-label>
+                <swp-form-input>
+                    <select id="approver">
+                        <option value="">Vælg...</option>
+                        <option>Karina Knudsen</option>
+                        <option>Butikschef</option>
+                    </select>
+                </swp-form-input>
+            </swp-form-field>
+
+            <swp-checkbox-field>
+                <input type="checkbox" id="confirmCheckbox" />
+                <label for="confirmCheckbox">Jeg bekræfter, at kassen er talt op, og at tallene er indtastet efter bedste evne.</label>
+            </swp-checkbox-field>
+        </swp-approval-grid>
+    </swp-card-content>
+    <swp-card-footer>
+        <swp-btn class="secondary">Gem som kladde</swp-btn>
+        <swp-actions-right>
+            <swp-btn class="ghost">Fortryd</swp-btn>
+            <swp-btn class="primary" id="approveBtn" disabled>Godkend & lås</swp-btn>
+        </swp-actions-right>
+    </swp-card-footer>
+</swp-card>