Add interest deletion and sales pipeline status tracking

- Add delete button with confirmation dialog to InterestDetailsModal
- Implement delete-interest API endpoint
- Add sales pipeline status section with visual indicators
- Update UI states to handle deletion loading states
- Add color-coded sales process level selection

server/api/delete-interest.ts

@@ -0,0 +1,22 @@
+import { deleteInterest } from "~/server/utils/nocodb";
+
+export default defineEventHandler(async (event) => {
+  const body = await readBody(event);
+  const { id } = body;
+  const xTag = getHeader(event, "x-tag");
+
+  try {
+    // Delete the interest from NocoDB
+    await deleteInterest(id);
+    
+    return {
+      success: true,
+      message: "Interest deleted successfully",
+    };
+  } catch (error: any) {
+    throw createError({
+      statusCode: 500,
+      statusMessage: error.message || "Failed to delete interest",
+    });
+  }
+});