feat: 🎸 add num_rows_per_page in /rows and /search responses
also rename num_total_rows in num_rows_total

BREAKING CHANGE: 🧨 field num_total_rows in /rows and /search has been renamed num_rows_total

fixes #1687
feat: 🎸 add num_rows_per_page in /rows and /search responses: also rename num_total_rows in num_rows_total

BREAKING CHANGE: 🧨 field num_total_rows in /rows and /search has been renamed num_rows_total

fixes #1687