feat(examples): creating an order via smart-contract wallet

[shoom3301]

Example for creating pre-signed order.
This example will be used for the docs: cowprotocol/docs#9

Demo:

presign-demo.mov

[github-actions]

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[coveralls]

coverage: 79.051%. remained the same
when pulling 9ded2b1 on feat/sc-wallet-order
into 7ef442e on main.

[socket-security]

New dependencies detected. Learn more about Socket for GitHub ↗︎

Packages	Version	New capabilities	Transitives	Size	Publisher
https	1.0.0	None	+0	331 B	hardus
util	0.12.5	environment	+8	244 kB	goto-bus-stop
assert	2.1.0	None	+10	336 kB	ljharb
buffer	6.0.3	None	+0	91.3 kB	feross
url	0.11.3	None	+4	402 kB	ljharb

[anxolin]

This is great! Also great test to later try to remove those dev-dependencies

[anxolin]

these are all the libs u mentioned we depend on?
This is what you plan to improve? is the final outcome that we don't need to add any of these dev dependencies?

[shoom3301]

Yes, I was talking about them.
But I've discovered that they actually came from @safe-global/api-kit and @safe-global/protocol-kit.
So, there is no problem with SDK itself.
I've tried to up Safe libs versions but haven't succeed, because they are using ethers@6.x.x.
In conclusion:

• cow-sdk is good, no issues there
• Safe libs with ethers@5.x.x have issues with node lbs
• we can't update Safe libs because new versions are based on ethers@6.x.x

[anxolin]

ups!, I see 👍

[alfetopito]

Why is it prefixed with npm: ?