payable attribute - `#[payable]` #7549

Job	Run time
cargo fmt	28s
Contracts / Clippy linter check	1m 30s
Contracts / Interactor tests	11m 39s
Contracts / Rust tests	4m 40s
Contracts / Wasm tests	12m 45s
Contracts / Test Coverage	8m 19s
	39m 21s

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