Create adders from existing objects: ReactiveCapabilityCurve, PhaseTapChanger, RatioTapChanger

[bc-rte]

Please check if the PR fulfills these requirements

• [X] The commit message follows our guidelines
• [X] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?

What kind of change does this PR introduce?

This PR introduces adder initialized by copying an existing component.

What is the current behavior?

What is the new behavior (if this is a feature change)?

Does this PR introduce a breaking change or deprecate an API?

• [X] Yes
• [ ] No

If yes, please check if the following requirements are fulfilled

• [ ] The Breaking Change or Deprecated label has been added
• [X] The migration steps are described in the following section

What changes might users need to make in their application due to this PR? (migration steps)

the NetworkImpl::newLine method now has two parametric implementations with one parameter. Users that used network.newLine(null) need to cast null network.newLine((String) null) in order to pass compilation

Other information:

This PR is inspired from previous work there.

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud