Feat: support adding multiple nodes/branches at once (performance increase)

[Thijss]

rustworkx supports adding multiple nodes/branches at once. This is much faster than one by one.
I've updated the code to support this.

benefits

This should also increase performance of methods like Graph.from_arrays and Grid.from_cache

side-effects

this introduces some breaking changes since some methods on the BaseGraphModel have been renamed:

• add_node -> add_node_array
• add_branch -> add_branch_array
• add_branch3 -> add_branch3_array

On the other hand, I don't expect this to break many in existing projects, because in general the Graph.add_branch and Graph.add_node functions are not directly used (e.g., Grid.append and Grid.add_node are used instead)

ToDo:

• needs some extra tests

Performance comparison

Existing code (main):

New code:

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.5% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud