Update copyright headers to 2023 for new files

[FraserGreenroyd]

Issues addressed by this PR

Fixes #279

Test files

Changelog

Additional comments

[FraserGreenroyd]

@BHoMBot check copyright-compliance

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, the following actions are now queued: - check `copyright-compliance`

[FraserGreenroyd]

@BHoMBot check compliance

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, the following actions are now queued: - check `code-compliance` - check `documentation-compliance` - check `project-compliance` - check `branch-compliance` - check `dataset-compliance` - check `copyright-compliance`

[bhombot-ci[bot]]

The check `copyright-compliance` has already been run previously and recorded as a successful check. This check has not been run again at this time.

[FraserGreenroyd]

@BHoMBot check versioning

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, the following actions are now queued: - check `versioning`

[FraserGreenroyd]

@BHoMBot check core @BHoMBot check serialisation @BHoMBot check null-handling

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, the following actions are now queued: - check `core` - check `serialisation` - check `null-handling`

[FraserGreenroyd]

@BHoMBot check ready-to-merge

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, the following actions are now queued: - check `ready-to-merge`

[kprusicka]

Dziekuje @BHoMBot

[bhombot-ci[bot]]

@kprusicka you're very welcome! :smile: