feat: Enhance Dataset Edit Page with Unsaved Changes Indicator and Improved Structure

- Added a progress indicator for unsaved changes at the top of the dataset edit page.
- Enhanced the title section with a dataset status badge and improved layout.
- Introduced collapsible sections for better organization of form fields.
- Improved notifications for success/error messages.
- Refactored form fields into distinct sections: Basic Information, Licenses, Titles, Descriptions, Creators & Contributors, Additional Metadata, Geographic Coverage, and Files.
- Enhanced loading spinner with a more visually appealing overlay.
- Added new project validation logic in the backend with create and update validators.

app/validators/project.ts

@@ -0,0 +1,28 @@
+// app/validators/project.ts
+import vine from '@vinejs/vine';
+
+export const createProjectValidator = vine.compile(
+    vine.object({
+        label: vine.string().trim().minLength(1).maxLength(50),
+        name: vine
+            .string()
+            .trim()
+            .minLength(3)
+            .maxLength(255)
+            .regex(/^[a-z0-9-]+$/),
+        description: vine.string().trim().maxLength(255).minLength(5).optional(),
+    }),
+);
+
+export const updateProjectValidator = vine.compile(
+    vine.object({
+        // label is NOT included since it's readonly
+        name: vine
+            .string()
+            .trim()
+            .minLength(3)
+            .maxLength(255)
+            .regex(/^[a-z0-9-]+$/),
+         description: vine.string().trim().maxLength(255).minLength(5).optional(),
+    }),
+);