Support transfers with 24h validity period

[moritzkiefer-da]

Current state:

1. Only handles transfers
2. Does not handle all edge cases like aborting two-step transfers.
3. Only one smoke test, needs lot more testing.
4. AmuletRules choices not yet wired up to DsoRules.

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[meiersi-da]

Nice work! Directionally right. Two main comments are:

• avoid contention with archival of AmuletRules due to config changes
• try to change code so that it only uses the newly introduced choices

[moritzkiefer-da]

@meiersi-da Ready for another review when you have the time, design doc not yet updated.

[meiersi-da]

Thanks a lot! Good improvements!

Let me know when you'd like another review.

[moritzkiefer-da]

@meiersi-da ready for another review, I've rebased it on a branch that just enforces the additional restrictions on AmuletConfig. Daml tests do pass now but definitely needs a lot more tests.

[meiersi-da]

Thanks a lot. I believe we've converged on the change.