PLT-967 Use reference script in the game example

[berewt]

It has required the creation of additional constraint functions to pass the reference script txOutRef along the spend utxos.

Pre-submit checklist:

• Branch
  • [ ] Tests are provided (if possible)
  • [ ] Commit sequence broadly makes sense
  • [ ] Key commits have useful messages
  • [ ] Formatting, PNG optimization, etc. are updated
  • [ ] Important changes are reflected in changelog.d of the affected packages
• PR
  • [ ] Self-reviewed the diff
  • [ ] Useful pull request description
  • [ ] Reference the ADR in the PR and reference the PR in the ADR (if revelant)
  • [ ] Reviewer requested

[berewt]

In general LGTM but I worry about renaming collectFrom* to spendUtxosFrom*. We should note that in a changelog entry. And a better way I suppose would be to deprecate them, introduce new versions in this following release (1.3.0), and only then remove collectFrom* in the next release 1.4.0.

You're right, I wrote a changelog entry about it but I think I forgot to add it. I'm going to add the deprecation warnings.