Refactor keyword handling: Replace 'intent' with 'country' across backend and frontend

- Updated AutomationService to include estimated_word_count.
- Increased stage_1_batch_size from 20 to 50 in AutomationViewSet.
- Changed Keywords model to replace 'intent' property with 'country'.
- Adjusted ClusteringService to allow a maximum of 50 keywords for clustering.
- Modified admin and management commands to remove 'intent' and use 'country' instead.
- Updated serializers to reflect the change from 'intent' to 'country'.
- Adjusted views and filters to use 'country' instead of 'intent'.
- Updated frontend forms, filters, and pages to replace 'intent' with 'country'.
- Added migration to remove 'intent' field and add 'country' field to SeedKeyword model.

frontend/src/config/forms/keyword-form.config.ts

@@ -55,16 +55,19 @@ export const getKeywordFormConfig = (options?: {
       required: false,
     },
     {
-      key: 'intent',
-      label: 'Intent',
+      key: 'country',
+      label: 'Country',
       type: 'select',
-      value: 'informational',
+      value: 'US',
       onChange: () => {},
       options: [
-        { value: 'informational', label: 'Informational' },
-        { value: 'transactional', label: 'Transactional' },
-        { value: 'navigational', label: 'Navigational' },
-        { value: 'commercial', label: 'Commercial' },
+        { value: 'US', label: 'United States' },
+        { value: 'CA', label: 'Canada' },
+        { value: 'GB', label: 'United Kingdom' },
+        { value: 'AE', label: 'United Arab Emirates' },
+        { value: 'AU', label: 'Australia' },
+        { value: 'IN', label: 'India' },
+        { value: 'PK', label: 'Pakistan' },
       ],
       required: false,
     },