Add edge count backend call

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #49 will create unknown performance changes

_{Comparing add-edge-count-backend-call (7220b98) with master (4438409)}

Summary

🆕 4 new benchmarks ⁉️ 4 (👁 4) dropped benchmarks

Benchmarks breakdown

	Benchmark	master	add-edge-count-backend-call	Change
🆕	test_get_density_performance[DataFrameBackend]	N/A	11.7 s	N/A
🆕	test_get_density_performance[SQLBackend]	N/A	4.4 s	N/A
👁	test_get_density_performance[backend0]	14.1 s	N/A	N/A
👁	test_get_density_performance[backend1]	5.8 s	N/A	N/A
🆕	test_node_addition_performance[DataFrameBackend]	N/A	4.6 s	N/A
🆕	test_node_addition_performance[SQLBackend]	N/A	1.7 s	N/A
👁	test_node_addition_performance[backend0]	4.6 s	N/A	N/A
👁	test_node_addition_performance[backend1]	1.7 s	N/A	N/A