UX ECALLs and SDK framework #168

Job	Run time
Run V-App Client SDK tests	52s
Run V-App SDK tests	23s
Run common crate tests	21s
Run vnd-bitcoin app tests	57s
vnd-test, Build on Risc-V target	20s
Run vnd-test app tests	21s
Run vnd-test app client tests	56s
vnd-sadik, Build on Risc-V target	19s
Build application using the reusable workflow / Retrieve application metadata / Retrieve application metadata	5s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (stax)	2m 24s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (flex)	2m 31s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (nanosp)	2m 24s
Build application using the reusable workflow / Merge build artifacts	2s
vnd-test, Integration tests on Speculos (nanosplus)	2m 21s
vnd-sadik, Integration tests on Speculos (nanosplus)	5m 23s
vnd-sadik, Integration tests on Speculos (flex)	5m 23s
vnd-test, Integration tests on Speculos (flex)	2m 9s
vnd-sadik, Integration tests on Speculos (stax)	5m 42s
vnd-test, Integration tests on Speculos (stax)	5m 55s
	38m 48s

Provide feedback