SDKs: Support Box static array in transactions + algod box search APIs

[michaeldiamant]

Problem

As of algorand/go-algorand#3890, accessing a Box requires specifying the box name in the (new) static Boxes array. The story requests adding SDK support + tests for submitting Application Call transactions with a static Boxes array.

SDKs in-scope:

• https://github.com/algorand/go-algorand-sdk/
• https://github.com/algorand/java-algorand-sdk
• https://github.com/algorand/js-algorand-sdk
• https://github.com/algorand/py-algorand-sdk

Solution

• We should able to specify the boxes that an application call will touch: i.e. ApplicationCallTxn needs a new "boxes" field.
• The atomic transaction composer also needs an update to the add_method_call function, and possibly some other updates (not well understood by me yet).
• Encoding note:
  • The SDK exposes an API where apps are directly referenced: appl(A, ForeignApps=[B], Boxes=[(A, "hello"), (B, "goodbye")])
  • In contrast, the transaction encoding translates the app reference to the foreign app index (e.g. A to 0): appl(A, ForeignApps=[B], Boxes=[(0, "hello"), (1, "goodbye")]).

Dependencies

Urgency

[algochoi]

SDK work for Boxes

Work	go-algorand	algorand-sdk-testing	go-sdk	java-sdk	py-sdk	js-sdk	Notes
Encode boxes as new field in application transactions	algorand/go-algorand#3890	✅ #181	✅ algorand/go-algorand-sdk#337	✅ algorand/java-algorand-sdk#340	✅ algorand/py-algorand-sdk#338	✅ algorand/js-algorand-sdk#573	Unit tests for encoding appl calls for boxes correctly
API Path tests	-	✅ #203	✅ algorand/go-algorand-sdk#338	✅ algorand/java-algorand-sdk#343	✅ algorand/py-algorand-sdk#346	✅ algorand/js-algorand-sdk#586	Check that API URLs are escaped properly & check for non UTF-8 characters in endpoint url
Support box reads given app and name	algorand/go-algorand#3973	✅ #196	✅ algorand/go-algorand-sdk#338	✅ algorand/java-algorand-sdk#343	✅ algorand/py-algorand-sdk#346	✅ algorand/js-algorand-sdk#586	Integration tests for round-trip box creation, writes and reads using algod APIs
Support all box names by app	algorand/go-algorand#4021	✅ #208	✅ algorand/go-algorand-sdk#344	✅ algorand/java-algorand-sdk#347	✅ algorand/py-algorand-sdk#359	✅ algorand/js-algorand-sdk#608