ci: check examples #5793

Job	Run time
Checking fmt and docs	1m 26s
Build and test (Nix) (ubuntu-latest, nightly)	9m 56s
cargo deny	34s
Build and test (Windows) (windows-latest, nightly, x86_64-pc-windows-msvc)	12m 55s
Build and test (Nix) (ubuntu-latest, stable)	24m 20s
Build and test (Windows) (windows-latest, stable, x86_64-pc-windows-msvc)	12m 52s
Build and test (Nix) (macOS-arm-latest, nightly)	12m 45s
Build and test (Nix) (macOS-arm-latest, stable)	13m 1s
clippy_check	2m 55s
Cross compile (i686-unknown-linux-gnu)	3m 11s
Minimal Supported Rust Version	2m 45s
Cross compile (armv7-linux-androideabi)	36s
Cross compile (aarch64-linux-android)	36s
Run network simulations/benchmarks	7m 11s
Build release binaries	0s
	1h 45m 3s

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