Add docs for "Copy with control sequences" functionality

[FuegoFro]

See https://github.com/microsoft/terminal/pull/17059

[learn-build-service-prod[bot]]

Learn Build status updates of commit _773e827_:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
TerminalDocs/customize-settings/actions.md	:white_check_mark:Succeeded	View
TerminalDocs/selection.md	:white_check_mark:Succeeded	View

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[FuegoFro]

@microsoft-github-policy-service agree

[nguyen-dows]

We will revisit this PR this after https://github.com/microsoft/terminal/pull/17059 gets merged in main.