Feature: New exciter models

[leonardocarreras]

This is based on various PRs from @martinmoraga at the times of his work on ACS.

Adaptations are mine.

Ongoing work.

New models:

• Add Model: Exciter DC1
• Add Model: Exciter DC1 Simplified > Replaces old Exciter (.h & .cpp)
• Add Model: Exciter DC1 Simplified for sT1
• Add Model: Exciter DC1 Static

Updates

• Add Base Exciter model
• Add models to Factory
• Add models to Component list
• Update Generator models to the new Exciters
• Keep a deprecated interface for backwards compatibility in generators
• Update existing C++ examples
• Update python bindings
• Update notebook examples

Other

• Fix logger (fmt related) for handling new exciter