Skip character creation options page

[martinprejsa]

Move CharacterCreationFinishedPatch.cs -> CharacterCreationStatePatch.cs, renamed functions and objects inside, created NextStagePostfix to handle option page skip

PR Checklist

Please check if your PR fulfills the following requirements:

• All new classes have class-level documentation comments, if there are any at all
• Tests for the changes have been added (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation update
• Other... Please describe:

What is the current behaviour?

Options page is shown during character creation.

What is the new behaviour?

Options page is not shown during character creation.

[7H30D0R]

@EgardA did you mean to revert this PR?

[EgardA]

@EgardA did you mean to revert this PR?

Several PRs were reverted at the same time due to some issues, this one might be applicable again. Was made in correspondence with wattman but I don't remember exactly the reason.