Split build and test CI entry point from workflow to provide a reusable interface #1456

Job	Run time
Compile the UX-less version of the app on Nano S+ for performance tests	1m 29s
Compilation for X, S+, Stax and Flex (nanox, $NANOX_SDK)	1m 44s
Compilation for X, S+, Stax and Flex (nanosp, $NANOSP_SDK)	1m 41s
Compilation for X, S+, Stax and Flex (stax, $STAX_SDK)	1m 57s
Compilation for X, S+, Stax and Flex (flex, $FLEX_SDK)	2m 5s
Performance report	3m 37s
Tests with the Python library and legacy Bitcoin app	38s
Tests on mainnet (nanox)	24s
Tests on mainnet (nanosp)	24s
Tests with the JS library	1m 21s
Tests for rust client library	1m 31s
Tests on mainnet (stax)	25s
Unit test	1m 15s
Tests on mainnet (flex)	24s
	18m 55s

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