feat(pos): add shop and statistics modules with components, services, and routing

- Implemented shop module with root component, loading state, and invoice handling.
- Created statistics module with invoice type card component, API routes, and data models.
- Added season picker component for selecting year and season.
- Integrated services for fetching statistics data and managing state.
- Established routing for statistics and shop views.

src/app/shared/components/seasonPicker/season-picker-dialog.component.html

@@ -0,0 +1,33 @@
+<shared-light-bottomsheet [(visible)]="visible">
+  <div class="mt-1">
+    <label class="mb-1 block text-sm font-medium text-slate-600">انتخاب سال</label>
+    <select
+      [(ngModel)]="selectedYearDraft"
+      class="w-full rounded-xl border border-slate-200 bg-white px-3 py-2 text-slate-700 outline-none">
+      @for (yearItem of years; track yearItem.value) {
+        <option [value]="yearItem.value">{{ yearItem.year }}</option>
+      }
+    </select>
+  </div>
+
+  <div class="mt-4 grid grid-cols-2 gap-2">
+    @for (seasonItem of seasons; track seasonItem.key) {
+      <button
+        pButton
+        type="button"
+        [label]="seasonItem.label"
+        [severity]="seasonItem.severity"
+        outlined
+        (click)="selectedSeasonDraft.set(seasonItem.key)"></button>
+    }
+    <!-- [disabled]="selectedYear <= selectedYearDraft() && selectedSeason <= selectedSeasonDraft()" -->
+  </div>
+
+  <div class="mt-4">
+    <app-form-footer-actions
+      submitLabel="تایید"
+      cancelLabel="انصراف"
+      (onCancel)="visibleChange.emit(false)"
+      (onSubmit)="onSubmit()" />
+  </div>
+</shared-light-bottomsheet>