feat(i18n): Implement multilingual support with Polish and English translations

- Added translation context and provider for managing language state.
- Integrated translation functionality into existing components (TaskStatusDropdown, Navigation).
- Created LanguageSwitcher component for language selection.
- Updated task statuses and navigation labels to use translations.
- Added Polish translations for various UI elements, including navigation, tasks, projects, and contracts.
- Refactored utility functions to return localized strings for deadlines and date formatting.

src/components/TaskStatusDropdownSimple.js

@@ -3,13 +3,16 @@
 import { useState, useRef, useEffect } from "react";
 import { createPortal } from "react-dom";
 import Badge from "@/components/ui/Badge";
+import { useTranslation } from "@/lib/i18n";
 
 export default function TaskStatusDropdown({
 	task,
 	size = "sm",
 	showDropdown = true,
 	onStatusChange,
-}) {	const [status, setStatus] = useState(task.status);
+}) {	
+	const { t } = useTranslation();
+	const [status, setStatus] = useState(task.status);
 	const [loading, setLoading] = useState(false);
 	const [isOpen, setIsOpen] = useState(false);
 	const [dropdownPosition, setDropdownPosition] = useState({ x: 0, y: 0, position: 'bottom' });
@@ -23,19 +26,19 @@ export default function TaskStatusDropdown({
 
 	const statusConfig = {
 		pending: {
-			label: "Pending",
+			label: t("taskStatus.pending"),
 			variant: "warning",
 		},
 		in_progress: {
-			label: "In Progress",
+			label: t("taskStatus.in_progress"),
 			variant: "primary",
 		},
 		completed: {
-			label: "Completed",
+			label: t("taskStatus.completed"),
 			variant: "success",
 		},
 		cancelled: {
-			label: "Cancelled",
+			label: t("taskStatus.cancelled"),
 			variant: "danger",
 		},
 	};