feat: add place_type field to birth certificates and registry validation

**Changes:**
- Add place_type field to certificate of live birth (save and update)
  * Include place_type in form data capture and sanitization
  * Add required field validation for place_type
  * Update SQL INSERT/UPDATE statements with place_type column
  * Bind place_type parameter in database queries

- Add duplicate registry number validation for marriage license updates
  * Validate registry_no changes against existing active records
  * Exclude current record from duplicate check
  * Return error message if duplicate found

**Why:**
- Enhances birth certificate data structure to distinguish between hospital and barangay births
- Prevents duplicate registry numbers when updating marriage license applications
- Improves data integrity and validation
