feat: new types for directed identity, improved grant

[BlairCurrey]

Updates to latest open payments spec (grant spent amount fix, directed identity).

• exports grant type guards (missed from previous release)
• adds more explicit grant types (GrantWithAccessToken, GrantWithSubject)
• changes grant spent amount return type to be required but nullable (ie spentReceiveAmount: Amount | null)
• loosens client field to be string (as currently) or new object with string/jwk.

[changeset-bot]

🦋 Changeset detected

Latest commit: 042f2d4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@interledger/open-payments	Minor
example-peer-to-peer	Patch

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[BlairCurrey]

New client type for the directed identity support.

Directed identity changes and the grant spent amount fixes were both included in new 1.3 version of spec. Perhaps they should have been more granular versions (grant spent amount fix, then directed identity).

If this is released before Rafiki is updated then the jwk option wont work. However, it may also give clients more time to update to the new pattern (string -> {walletAddress: string}. I guess if we wanted we could simply omit the { jwk: JWK; walletAddress?: never } item here for now and include once implemented in rafiki?

[njlie]

I assume that the "string" format is to be interpreted as a wallet address url, correct?

[BlairCurrey]

That is correct - for backwards compatibility purposes. Should be removed at some point in favor of the object only.

[njlie]

LGTM

[njlie]

I assume that the "string" format is to be interpreted as a wallet address url, correct?