Allow the creation of custom Poseidon configs (#212) #1028

Job	Run time
Build target wasm32-unknown-unknown	3m 52s
Build target wasm32-wasi	3m 47s
Test (basic)	18m 15s
Bench compile	5m 5s
Rustfmt	54s
Run examples & examples tests	11m 7s
Clippy lint checks (wasm)	2m 1s
Clippy lint checks (basic)	2m 19s
Spell Check with Typos	6s
	47m 26s

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