Add tenantStreet and tenantTown fields to LocationEditForm

- Added tenantStreet and tenantTown optional fields to BillingLocation interface
- Updated LocationEditForm to include new input fields with 27 character max length
- Both fields are mandatory when 2D code generation is enabled
- Updated all database operations (insert and update) to persist new fields
- Added Croatian and English translations for labels and validation messages
- Updated form state tracking to include new tenant address fields

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/lib/db-types.ts

@@ -55,6 +55,10 @@ export interface BillingLocation {
     tenantFirstName?: string | null;
     /** (optional) tenant last name */
     tenantLastName?: string | null;
+    /** (optional) tenant street */
+    tenantStreet?: string | null;
+    /** (optional) tenant town */
+    tenantTown?: string | null;
     /** (optional) whether to automatically notify tenant */
     autoBillFwd?: boolean | null;
     /** (optional) tenant email */