Rust

Add vault variable example #5326

Job	Run time
Build Spin Ubuntu	18m 37s
Build Spin static (aarch64, aarch64-unknown-linux-musl, -C target-feature=+fp16 -C target-feature...	13m 55s
e2e-tests	16m 59s
Build Spin (windows-latest)	18m 19s
Build Spin static (amd64, x86_64-unknown-linux-musl, -C target-feature=+crt-static -C link-self-c...	13m 40s
Lint Rust	5m 30s
Build Spin (macos-latest)	16m 50s
Test Spin (ubuntu-22.04-4core-spin)	23m 31s
Test Spin (macos-latest)	23m 34s
Test Spin SDK - Go	4m 26s
	2h 35m 21s

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