Dry run - 2nd proposal

[olperr1]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• 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?

Fixes #3001

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

• Yes
• No

If yes, please check if the following requirements are fulfilled

• The Breaking Change or Deprecated label has been added
• 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)

⚠️ TODO

Other information:

TODO:

• Launch a full dry-run if an UnsupportedDryRunException is caught from an IIDM API method
  • in NetworkModificationList, but also in "standard" NetworkModifications
  • with this method, custom IIDM implementation maintainers will have a way to "refuse" to execute a local dry run for certain methods (if a regular implementation is to hard to achieve). The concerned NetworkModifications' dry-runs will be slower, but they won't crash
• Check generated reports
• Fix the TODO in AbstractNetworkModification
• Fix existing unit tests
• Javadoc
• Improve test coverage
• Support dry-run for network element removal NetworkModifications
• Migration guide
• Documentation

[annetill]

Rework with #3123 and #3127