Swap improvements #1038

Job	Run time
Compilation for NanoS, X, S+, and Stax (nanos, $NANOS_SDK)	2m 0s
Compilation for NanoS, X, S+, and Stax (nanox, $NANOX_SDK)	1m 57s
Compilation for NanoS, X, S+, and Stax (nanosp, $NANOSP_SDK)	1m 38s
Compilation for NanoS, X, S+, and Stax (stax, $STAX_SDK)	2m 7s
Tests (nanos)	10m 37s
Tests (nanox)	9m 31s
Unit test	2m 40s
Tests with the Python library and legacy Bitcoin app	57s
Tests on mainnet (nanos)	44s
Tests (nanosp)	11m 53s
Tests on mainnet (nanox)	36s
Tests (stax)	49m 54s
Tests on mainnet (nanosp)	28s
Tests on mainnet (stax)	39s
Tests with the JS library	1m 21s
Tests for rust client library	7m 16s
	1h 44m 18s

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