Migrating the measurement and publish workflows to GitHub Actions #23

Job	Run time
set-image	1s
clippy-examples (STD)	8m 48s
clippy	3m 45s
check (STD)	10m 43s
clippy-examples (WASM)	4m 6s
dylint	3m 1s
check (WASM)	1m 50s
check (RISCV)	1m 30s
fmt	2m 22s
spellcheck	1m 38s
examples-test	16m 6s
build (STD)	16m 49s
docs	3m 13s
codecov	26m 15s
build (WASM)	1m 17s
test	15m 36s
examples-docs	3m 10s
examples-contract-build (WASM)	23m 39s
examples-contract-build (RISCV)	2m 20s
measurements / contract-sizes	18m 33s
	2h 44m 42s

Provide feedback