Unified syntax prototype

[andrei-marinica]

Unified syntax core ideas: the Tx universal object with its generics, the mechanism for setting sender, recipient, payments, payload, an attempt at callback (likely to be changed), plus a proof of concept for a blackbox test.

This is very preliminary work, everything here is subject to later changes.

[github-actions]

Contract comparison - from aab2ab7 to df6d99c

Path	size	has-allocator	has-format
mx-sdk-rs/contracts/benchmarks
- large-storage/large-storage.wasm	2931	No	No
- send-tx-repeat/send-tx-repeat.wasm	904	No	No
- str-repeat/str-repeat.wasm	2144	No	No
mx-sdk-rs/contracts/benchmarks/mappers
- linked-list-repeat/linked-list-repeat.wasm	7259	No	No
- map-repeat/map-repeat.wasm	8120	No	No
- queue-repeat/queue-repeat.wasm	6536	No	No
- set-repeat/set-repeat.wasm	7964	No	No
- single-value-repeat/single-value-repeat.wasm	5113	No	No
- vec-repeat/vec-repeat.wasm	5908	No	No
mx-sdk-rs/contracts/core
- price-aggregator/multiversx-price-aggregator-sc.wasm	20740	No	No
- wegld-swap/multiversx-wegld-swap-sc.wasm	4405	No	No
mx-sdk-rs/contracts/examples
- adder/adder.wasm	696	No	No
- bonding-curve-contract/bonding-curve-contract.wasm	15812 ➡️ 15876 🔴	No	No
- check-pause/check-pause.wasm	1229	No	No
- crowdfunding-esdt/crowdfunding-esdt.wasm	3599	No	No
- crypto-bubbles/crypto-bubbles.wasm	2361	No	No
- crypto-zombies/crypto-zombies.wasm	10941 ➡️ 11052 🔴	No	No
- digital-cash/digital-cash.wasm	10876	No	No
- empty/empty.wasm	231	No	No
- esdt-transfer-with-fee/esdt-transfer-with-fee.wasm	8890	No	No
- factorial/factorial.wasm	576	No	No
- fractional-nfts/fractional-nfts.wasm	8741 ➡️ 8803 🔴	No	No
- lottery-esdt/lottery-esdt.wasm	11433	No	No
- multisig
- - multisig.wasm	15315 ➡️ 15390 🔴	No	No
- - multisig-full.wasm	17306 ➡️ 17379 🔴	No	No
- - multisig-view.wasm	7692	No	No
- nft-minter/nft-minter.wasm	10353 ➡️ 10413 🔴	No	No
- nft-storage-prepay/nft-storage-prepay.wasm	2299	No	No
- nft-subscription/nft-subscription.wasm	8533 ➡️ 8539 🔴	No	No
- ping-pong-egld/ping-pong-egld.wasm	6704	No	No
- proxy-pause/proxy-pause.wasm	5681	No	No
- rewards-distribution/rewards-distribution.wasm	11322 ➡️ 11572 🔴	No	No
- seed-nft-minter/seed-nft-minter.wasm	15416 ➡️ 15421 🔴	No	No
- token-release/token-release.wasm	8498	No	No
mx-sdk-rs/contracts/examples/crypto-kitties
- kitty-auction/kitty-auction.wasm	11066 ➡️ 11206 🔴	No	No
- kitty-genetic-alg/kitty-genetic-alg.wasm	3583	No	No
- kitty-ownership/kitty-ownership.wasm	14011 ➡️ 14113 🔴	No	No
mx-sdk-rs/contracts/examples/order-book
- factory/order-book-factory.wasm	5014	No	No
- pair/order-book-pair.wasm	16325	No	No
mx-sdk-rs/contracts/feature-tests
- abi-tester
- - abi-tester.wasm	7749	No	No
- - abi-tester-ev.wasm	757	No	No
- alloc-features/alloc-features.wasm	19530	No	Yes
- basic-features
- - basic-features.wasm	61664 ➡️ 61611 🟢	No	No
- - basic-features-storage-bytes.wasm	538	No	No
- big-float-features/big-float-features.wasm	5154	No	No
- esdt-system-sc-mock/esdt-system-sc-mock.wasm	4945 ➡️ 3459 🟢	No	No
- formatted-message-features/formatted-message-features.wasm	4430	No	No
- managed-map-features/managed-map-features.wasm	1230	No	No
- multi-contract-features
- - multi-contract-alt-impl.wasm	360	No	No
- - multi-contract-example-feature.wasm	677	No	No
- - multi-contract-features.wasm	678	No	No
- - multi-contract-features-view.wasm	1115	No	No
- panic-message-features/panic-message-features.wasm	3363	No	Yes
- payable-features/payable-features.wasm	5112	No	No
- rust-snippets-generator-test/rust-snippets-generator-test.wasm	5756	No	No
- rust-testing-framework-tester/rust-testing-framework-tester.wasm	8355	No	No
- use-module
- - use-module.wasm	33971 ➡️ 33978 🔴	No	Yes
- - use-module-view.wasm	733	No	No
mx-sdk-rs/contracts/feature-tests/composability
- builtin-func-features/builtin-func-features.wasm	2487 ➡️ 2564 🔴	No	No
- forwarder/forwarder.wasm	29825 ➡️ 29981 🔴	No	No
- forwarder-queue
- - forwarder-queue.wasm	12006 ➡️ 12070 🔴	No	No
- - forwarder-queue-promises.wasm	12952 ➡️ 13015 🔴	No	No
- forwarder-raw
- - forwarder-raw.wasm	14990 ➡️ 15036 🔴	No	No
- - forwarder-raw-init-async-call.wasm	4466 ➡️ 4528 🔴	No	No
- - forwarder-raw-init-sync-call.wasm	4314	No	No
- local-esdt-and-nft/local-esdt-and-nft.wasm	12756 ➡️ 11802 🟢	No	No
- promises-features/promises-features.wasm	12521	No	No
- proxy-test-first/proxy-test-first.wasm	6937 ➡️ 7009 🔴	No	No
- proxy-test-second/proxy-test-second.wasm	1945	No	No
- recursive-caller/recursive-caller.wasm	6194 ➡️ 6305 🔴	No	No
- transfer-role-features/transfer-role-features.wasm	9136 ➡️ 9221 🔴	No	No
- vault
- - vault.wasm	7537 ➡️ 7511 🟢	No	No
- - vault-promises.wasm	8129 ➡️ 8233 🔴	No	No
- - vault-upgrade.wasm	700	No	No
mx-sdk-rs/contracts/feature-tests/composability/esdt-contract-pair
- first-contract/first-contract.wasm	2723	No	No
- second-contract/second-contract.wasm	1355	No	No
mx-sdk-rs/contracts/feature-tests/composability/execute-on-dest-esdt-issue-callback
- child/child.wasm	4921 ➡️ 4996 🔴	No	No
- parent/parent.wasm	1858	No	No
mx-sdk-rs/contracts/feature-tests/erc-style-contracts
- crowdfunding-erc20/crowdfunding-erc20.wasm	6328 ➡️ 6441 🔴	No	No
- erc1155/erc1155.wasm	13052 ➡️ 13158 🔴	No	No
- erc1155-marketplace/erc1155-marketplace.wasm	12093 ➡️ 12170 🔴	No	No
- erc1155-user-mock/erc1155-user-mock.wasm	1369	No	No
- erc20/erc20.wasm	2129	No	No
- erc721/erc721.wasm	2459	No	No
- lottery-erc20/lottery-erc20.wasm	13593 ➡️ 13711 🔴	No	No