Add Allegro shipment service and related components

- Implement AllegroShipmentService for managing shipment creation and status checks.
- Create ShipmentController to handle shipment preparation and label downloading.
- Introduce ShipmentPackageRepository for database interactions related to shipment packages.
- Add methods for retrieving delivery services, creating shipments, checking creation status, and downloading labels.
- Implement address validation and token management for Allegro API integration.

database/migrations/20260305_000032_create_company_settings_table.sql

@@ -0,0 +1,24 @@
+CREATE TABLE IF NOT EXISTS company_settings (
+    id TINYINT UNSIGNED NOT NULL DEFAULT 1 PRIMARY KEY,
+    company_name VARCHAR(200) NULL,
+    person_name VARCHAR(200) NULL,
+    street VARCHAR(200) NULL,
+    city VARCHAR(128) NULL,
+    postal_code VARCHAR(16) NULL,
+    country_code CHAR(2) NOT NULL DEFAULT 'PL',
+    phone VARCHAR(64) NULL,
+    email VARCHAR(128) NULL,
+    tax_number VARCHAR(64) NULL,
+    bank_account VARCHAR(64) NULL,
+    bank_owner_name VARCHAR(200) NULL,
+    default_package_length_cm DECIMAL(8,1) NOT NULL DEFAULT 25.0,
+    default_package_width_cm DECIMAL(8,1) NOT NULL DEFAULT 20.0,
+    default_package_height_cm DECIMAL(8,1) NOT NULL DEFAULT 8.0,
+    default_package_weight_kg DECIMAL(8,3) NOT NULL DEFAULT 1.000,
+    default_label_format VARCHAR(8) NOT NULL DEFAULT 'PDF',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT INTO company_settings (id) VALUES (1)
+ON DUPLICATE KEY UPDATE updated_at = VALUES(updated_at);