feat: Add new item management components for invoice editing

- Implemented packages section for item details in `packages-section.svelte`
- Created summary section to display general data and weights in `summary-section.svelte`
- Developed tab continuation for additional item details in `tab-continuation.svelte`
- Added identifiers tab for managing item identifiers in `tab-identifiers.svelte`
- Introduced labeling tab for item labeling information in `tab-labeling.svelte`
- Created serial numbers tab for entering multiple serial numbers in `tab-series.svelte`
- Built item sheet for inventory items in `item-sheet-inv.svelte`
- Developed items tab form for managing invoice items in `items-tab-form.svelte`

backend/api/v1/modules/a76/items/models.py

@@ -28,14 +28,9 @@ class Item(Base, TenantScopedMixin, TimestampMixin):
     }
 
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
-    invoice_id: Mapped[int] = mapped_column(ForeignKey("a76.invoice_header.id"))  # CONSECUTIVO
-    # Type: IMPORT_TEMP, IMPORT_DEF, EXPORT, REPAIR, etc.
-    item_type: Mapped[str] = mapped_column(String(20))
-    system_origin: Mapped[str] = mapped_column(String(10))  # SCAF or SCAII
+    invoice_id: Mapped[int] = mapped_column(ForeignKey("a76.invoice_header.id"))  # CONSECUTIVO        
 
     # Item references
-    invoice_number: Mapped[Optional[str]] = mapped_column(
-        String(15))  # FACTURAIMPO/FACTURAEXPO
     reference_number: Mapped[Optional[str]] = mapped_column(
         String(20))  # NUMREFERENCIA
     order: Mapped[Optional[str]] = mapped_column(
@@ -44,8 +39,6 @@ class Item(Base, TenantScopedMixin, TimestampMixin):
         String(50))  # NUMEROGUIA/NUMERODEGUIA
 
     # Dates
-    invoice_date: Mapped[Optional[int]] = mapped_column(
-        Integer)  # FECHAFACTURA
     depreciation_date: Mapped[Optional[int]] = mapped_column(
         Integer)  # FECHADEPRECIACION